We have to finish our work in two hours, let’s ________ it quickly. If not. we’ll he punished by the boss.

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试将句中画线部分补全

1．When asked, he gave good advice．

________________________

2．If necessary, we’ll have a meeting．

________________________

3．He will not go to the party unless invited．

________________________

阅读下面的短文，请根据短文后的要求答题(请注意问题后的词数要求)。

　　Life is so full of questions．So is science．

　　Scientists have had so many great accomplishments and our knowledge about the world has grown a great deal, but there is still a lot that we don’t know yet．

　　USA’s Science magazine is carrying a special report on 125 important unanswered scientific questions．They range from the nature of the universe to the nature of societies．Some will drive scientific research for a long time until next century, but others ________．Many will lead to new questions．

　　“The process of trying to figure out what we don’t know just keeps on giving scientists new questions．So, scientists’ job is never done，”said the editor．

　　Below are a few of the most pressing questions：

　　Are we alone in the universe?

　　Alone in all that space?Not likely．The real big question is when, if ever, we’ll have the power to reach out and touch such intelligence．With a bit of luck, it could be in the next 25 years．

　　How much can the human lifespan (寿命)be extended?

　　Lifespan extension in species such as mice has made some scientists believe that humans will hit beyond 100 or 110 years of age．Others say humans’ lifespan may be far more limited．

　　What can replace expensive oil?And when?

　　Whether alter native energy sources will be found in time to avoid an energy crisis depends in part on the importance given to energy research．It will require a global political agreement on what science is telling us．

1．What is the best title of the passage?(Please answer within 10 words．)

2．Which sentence in the passage can be replaced by the following one?

While scientists are working hard to answer those scientific questions, more questions will appear．

3．Please fill in the blank in the third paragraph with proper words or phrases to complete the sentence．(Please answer within 10 words．)

4．Which of the pressing questions do you think is the most valuable?Why?(Please answer with in 30 words．)

5．Translate the underlined sentence in the last paragraph into Chinese．

. If weather ________, we’ll go cutting.

A．allows

B．permits

C．lets

D．promises

We have to finish our work in two hours, let’s ________ it quickly. If not. we’ll he punished by the boss.

A.
get down to
B.
set off
C.
fix a time
D.
get used to

If _________, we'll go.

We have to finish our work in two hours, let’s ________ it quickly. If not. we’ll he punished by the boss.

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