题目内容

AIDS is said ______ the biggest health challenge to both men and women in that area over the past few years.

A. that it is
B. to be
C. that is has been
D. to have been

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It is ______ the possible dangers in the ocean that dolphins seldom sleep according to some scientist’s research findings.

A. that it is
B. to because
C. because
D. because of

It is because of her lack of experience_____she does not know how to deal with the situation.

A. which
B. so
C. so that
D. that

以原东北军为主体的抗日义勇军与中共进行合作并加入共产党的领导人是

A. 方振武
B. 吉鸿昌
C. 马占山
D. 李杜

1944年4月至1945年1月，日本发动打通中国大陆交通线的豫湘桂战役，占领中国（）多万平方公里的中国领土。

A. 30
B. 50
C. 10
D. 20