6. ________ people with mental－h(huán)ealth problems want most of all is a more equal and open working culture.

A．That　　 B．What C．When　　　 D．All what

5. We agreed to accept 　　　　　they thought was the best professor in the college .

　　 A．Whatever 　　　　　　 B．whomever 　　　　 C．whichever 　　　　　 D．whoever

4. The traveler lost his way in the woods, and 　　　made things worse was that it was getting dark.

A．that　　 B．what　 C．which　　　 D．a(chǎn)s

3. -Go and ask her 　　　　　come .

　　 -OK.　　　　　　　　　　　　　

　　 A．what time would she like to 　　　　　　　　　 B．a(chǎn)t what time she’d like to

　　 C．when would she like to 　　　　　　　　　　　　 D．when she likes to

2. -I rang you at about nine, but there was no reply.

　　　 -Oh, that was probably 　　　I was seeing the doctor.

　　 A．why　　　　　　　　　　 B．when　　　　　　　　　 C．what　　　　　　　　　 D．that

1. She looks sad. Could you please tell me ____ that prevents her from being as happy as before?

A. what it is　　 B. it is what　　　 C. how it is　　　　 D. it is how

2.設(shè)函數(shù)的圖象如圖所示，且與在原點(diǎn)相切，若函數(shù)的極小值為，(1)求的值；(2)求函數(shù)的遞減區(qū)間．

1.設(shè)f(x)=x³+,求函數(shù)f(x)的單調(diào)區(qū)間及其極值.

4. 若函數(shù)y=x³+ax²+bx+27在x=－1時(shí)有極大值，在x=3時(shí)有極小值，則a=___________,b=___________.

歸納反思：

課后探究：

3.函數(shù)y=－x³+48x－3的極大值為___________；極小值為_________