He whispered to his wife _________ he might wake up the sleeping boy.
| A．so that | B．on condition that |
| C．for fear that | D．so long as |
He made up his mind to devote his life the river polluted.
| A．to prevent, to be | B．to prevent, from being |
| C．to preventing, to be | D．to preventing, from being |
Many people think that it is making such an experiment.
| A．worthwhile | B．worth | C．worthy | D．valuable |
One day I a newspaper article about one in six European mammal species threatened with extinction.
| A．came at | B．came across | C．came about | D．came after |
We can catch sight of millions of stars in space.
| A．/, the | B．the, / | C．/, / | D．a , the |
第一节：单项填空（共15小题；每小题１分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
--- How long are you staying?
--- I don’t know. .
A. That’s OK. B. It depends. C. I am going. D. It’s doesn’t matter.