So sudden ________that the enemy had no time to escape.

A. did the attack　　　 B.the attack did　　　　 C. was the attack　　　 D. the attack was

(1)等量蒸餾水　(2)等量的乳酸　(3)1號(hào)試管pH變化明顯，pH明顯上升；2、3號(hào)試管pH變化不明顯　1號(hào)試管pH變化明顯，pH明顯下降；2、3號(hào)試管pH變化不明顯　(4)蒸餾水不具有緩沖作用，為對(duì)照組；人工配制的緩沖溶液具有緩沖作用；動(dòng)物血漿與緩沖溶液一樣具有緩沖作用，說明其成分中含有緩沖物質(zhì)

Beijing government puts more than 700 million yuan to increase its green space this year,____________ doubles the money provided last year.

A. as　　　　　 B. while　　　 C. that　　　　　 D. which

________ commits the crime shall be sentenced to ten years in prison.

A．Whichever　　　　　　　 B．Who　　

C．Whoever　　　　　　　　 D．Whatever

The red dress fits me ______ well, but it’s _____ expensive.

A. rather; fairly 　　 B. fairly; fairly　 　　C. fairly; rather　 　　 D. rather; rather

―How about the transplant operations?（ ）

―_______ on Tony, who gave one of his kidneys to his brothers, was harder.

A. The one　　 B. One　　　　 C. Which　　　 D. What

Don’t depend on him to do that , ______ he is a little child.

　 A.in all　 B.above all C.after all　 D.at all　

There are four basic _____ of blood in the human body. What do you belong to, A, B, AB or O?

　 A. kinds　 B. sorts　 C. types　 D. classes

It was raining hard, but none of us ________ working.

A. will stop　　 B. would stop

C. will be stopping D. has been stopping.

-- “Neal, listen,” she said, looking straight at him. “I ask you not to get_____ in this kind of matter.

-- It’s none of your business”.

　 A．caught　　　 B．involved　　 C．a(chǎn)ttached　　 D．connected