1.The moon,being much more nearer to the Earth than the Sun,is the principal cause of the tides.
A being B more nearer C principal D the tides
2.Scientists estimate that as many as two hundred millions visible meteors enter the Earth's atmosphere every day.
A as many as B millions C enter D every day
3.In the United States voters election representatives to the national legislature,which consists of the House of Representatives and the Senate.
A voters B election C representatives D consists
4.It is the interaction between people,rather than the events that occur in their lives,that are the main focus of social psychology.
A It is B interaction C that are D social
5.Tom is the best candidate for the position because he understands the project,knows the University,and who works very hard.
A best candidate B because C who D hard
6.If you would have checked your answer sheet more carefully,you would have corrected these errors yourself.
A would have checked B answer sheet
C more carefully D yourself

1 B much much修饰比较级
2 B million 只有 millions of 这个结构中才有复数形式
3 C
4 C
5 C 去掉
6 A had checked

3 4 不确定