4：Mercury differs from other industrial metals____it is a liquid. A：whereas B：in that C：because of D：consequently ...

23：The team’s attempt to win the game was_____ by the opposing goalkeeper. A：shocked B：caught up C：given up D：frustrated ...

17：Please____me for my rudeness. I really do not know the custom here. A：engage B：comfort C：execute D：forgive ...

5：The damage to his car was____;therefore, he could repair it himself. A：considerable B：appreciable C：negligible D：invisible ...

24：The success of the project____on the support we get from our friends. A：hinges B：hints C：bars D：hinders ...

18：____ appears considerably larger at the horizon than it does overhead is merely an optical illusion. A：The moon B：That the moon C：When the moon D：The moon which ...

12：Helen couldn’t go to France after all. That’s too bad;I’m sure she would have enjoyed it if ____. A：she’s gone B：she’ll go C：she’d gone D：she’d go ...

6：We find that some birds____twice a year between hot and cold countries. A：deteriorate B：degrade C：descend D：decay ...

25：You must register if you____ to vote. A：refuse B：save C：intend D：manage ...

19：Many years ago, a lot of factories were____from big cities to the mountainous areas in case of war. A：transferred B：transformed C：transmitted D：transported ...