18．Teenagers have reached a point in their life _______ they are supposed to make decisions of their own for the first time．（　�。�
A．whichB．whereC．howD．why

分析 青少年已經(jīng)來到了他們?nèi)松囊粋�(gè)關(guān)鍵點(diǎn)，他們要第一次作出他們自己的決定了．

解答 答案：B
題干中they are supposed to make decisions of their own for the first time修飾名詞point，是一個(gè)定語從句；從句結(jié)構(gòu)完整，要用關(guān)系副詞；先行詞point表示抽象地點(diǎn)，要用where來引導(dǎo)．故選B．

點(diǎn)評(píng) 定語從句是用來修飾名詞的形容詞性從句，相當(dāng)于一個(gè)形容詞．連接定語從句的引導(dǎo)詞分為關(guān)系代詞和關(guān)系副詞，關(guān)系代詞在從句中要作主語或賓語；關(guān)系副詞在從句中作狀語．這也是選擇關(guān)系詞的一個(gè)判斷方法．

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：選擇題

14．Is this the house        Abrabam Lincoln was born？（　�。�
A．at whereB．whichC．in whichD．when

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

9．No one can deny the factthat pollution is a serious problem（污染是個(gè)嚴(yán)重的問題）．The city authorities should take strong measures to deal with it．（problem）

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

6．People have wondered for a long time how their personalities and behaviors are formed．It is not easy to explain why one person is intelligent and another is not，or why one is cooperative and another is competitive．
Social scientists are，of course，extremely interested in these types of questions．They want to explain why we possess certain characteristics and exhibit certain behaviors．There are no clear answers yet，but two distinct schools of thought on the matter have developed．As one might expect，the two approaches are very different from one another，and there is a great deal of debate between proponents of each theory．The controversy is often referred to as"nature and nurture"．
Those who support the"nature"side of the conflict believe that our personalities and behavior patterns are largely determined by biological and genetic factors．That our environment has little，if anything，to do with our abilities，characteristics，and behavior is central to this theory．Taken to an extreme，this theory maintains that our behavior is predetermined to such a degree that we are almost completely governed by our instincts（本能）．
Proponents of the"nurture"theory，or，as they are often called，behaviorists，claimed that our environment is more important than our biologically based instincts in determining how we will act．A behaviorist，B．F．Skinner，sees humans as beings whose behavior is almost completely shaped by their surroundings．The behaviorists'view of the human being is quite mechanistic； they maintain that，like machines，humans'respond to environmental stimuli（刺激） as the basis of their behavior．
Socially and politically，the consequences of these two theories are far-reaching．In the US，for example，blacks often score below whites on standardized intelligence tests．This leads some"anature"proponents to conclude that blacks are genetically lower in status than whites．Behaviorists，on the contrary，say that the differences in scores are due to the fact that blacks are often robbed of many of the educational and other environmental advantages that whites enjoy，and that，as a result，they do not develop the same responses that whites do．
Either of these theories cannot yet fully explain human behavior．In fact，it is quite likely that the key to our behavior lies somewhere between these two extremes．That the controversy will continue for a long time is certain．
67．This passage is mainly concerned withD．
A．relation between personality and behavior
B．relation between behavior and environment
C．different accounts of patterns of human behavior
D．different theories of the formation of human behavior
68．The underlined word"proponents''in paragraph 2 meansC．
A．creators         B．a(chǎn)dvisors         C．a(chǎn)dvocates        D．judges
69．In paragraph 5，the author mainly writes aboutA．
A．the considerable influence of the two theories
B．differences between the blacks and whites
C．racial discrimination in the United States
D．different responds to intelligence tests
70．What's the author's purpose in writing the passage？D
A．To call our attention to the changes of human behavior．
B．To urge scientists to do more research in social science．
C．To give us a detailed explanation of human behavior．
D．To present an argument in the field of social science．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

13．It has been proved that eating vegetables inchildhood （童年） helps to protect you against serious illness in later life．

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

3．---Have you seen my e-mail about our TESL，project？
---Yes．Luckily，I checked my e-mails yesterday．Normally，I      my e-mail-box for days．（　�。�
A．haven't openedB．didn't openC．hadn't openedD．don't open

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

10．Even though they have worked side by side in the same office for 9 years，the two ladies ______ on good terms．（　�。�
A．are notB．were notC．have not beenD．will not be

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

7．Creating a good study environment takes a little planning．It is well worth the time as the end result will be much productive study time．Many people fail to do this and wonder why they cannot concentrate．After a couple of times of studying the right way，most people will be surprised at how much they can actually enjoy studying．（16）G
Know that concentration is the key．Reduce every possible distraction．Turn off the television and go in an area where you will not be interrupted by people．（17）C If you are studying on your computer，don't get distracted by emails and social networking sites．
（18）D If it is too dim（暗），your eyes will be strained and leave you tired and wanting to close your eyes．Sun is a light that naturally wakes you up and helps you think．
Choose a comfortable seat．（19）E Now a couch can work just fine for this as long as you don't find yourself laying flat after a few minutes．The whole point of studying is to be able to concentrate on the study matter and not on a sore back．
（20）B Now this is for the person who needs the background noise to tone out all the little noises of life going on．If you find yourself thinking about the song then maybe silence is better for you．
Keep something to drink and snack on close by to keep your blood sugar stable．Obviously sugary foods will give you a quick rush but you will also have a quick low afterward．
A．Learn more to make study environment different．
B．Turn on some music．
C．If you can，turn off your cell phone．
D．Find a place that is proper to read．
E．It should have a good back support and a good feeling．
F．Some people can study with lots of activities going on．
G．Read on to learn how to create a good study environment．

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

12．-If you break the rules again，you are sure to be punished．
-______？I don't care．（　�。�
A．What ifB．How comeC．What forD．So what

查看答案和解析>>

同步練習(xí)冊(cè)答案