[单项选择]The students worked（）
A. well here yesterday
B. here well yesterday
C. yesterday well here
D. yesterday here well

[单项选择]The students worked（）.
A. well here yesterday
B. here well yesterday
C. yesterday well here
D. yesterday here well

[单项选择]Many students agreed to come, but some students against because they said they don't have time.（）
A. were against because they said they did not
B. were against because they say they don't
C. were against it because they said they did not
D. were against coming because they said they don't

[单项选择]Students are called in American classes

[单项选择]What do the students mainly discuss


A. A physics exam.
B. A lecture they plan to attend.
C. An assignment.
D. Their favorite poets.

[单项选择]What are the students mainly discussing

[单项选择]Before liberation, the laboring people worked hard only to live a poor life.


A. 解放前，工人们艰难挣扎只为摆脱贫困生活。
B. 解放前，劳动人民工作努力，但还是过贫困生活。
C. 解放前，穷人拼命劳动，结果生活还是困难。
D. 解放前，劳动人民艰苦劳动，结果只能过贫困生活。

[单项选择]People appreciate to have worked with him because he has a good sense of humor.


A. to have worked
B. because
C. a good sense
D. humor

[单项选择]We had difficulties at first but everything worked ______ smoothly in the end.


A. off
B. out
C. away
D. up

[单项选择]

Year after year a dedicated Swedish chemist worked to find a substance which, when (1) nitroglyoerine (硝化甘油), would make explosives safer to handle (2) weakening their force. He had a personal (3) scientific reason to pursue his search, because his (4) brother had been killed when a can of nitroglycerine (5) exploded. The oily liquid had been (6) for so many disasters that its (7) had finally been outlawed by many countries.
While (8) a new formula one morning, the doctor broke a test tube and gashed (划开) his finger. He was daubing (涂搽) the (9) with collodion (火棉胶), a coating solution of gun -cotton dissolved in ether- alcohol (乙醚), (10) the idea struck him - mix collodion with the nitroglycerine! (11) . was the answer. The new mixture, (12) blasting gelatine (爆胶), was not only (13) safe to handle as dynamite, but it was also one - and - a - half times more powerful! In fact, so po
A. weapon
B. mixture
C. explosive
D. discovery