2019年mba考试英语模拟题——连词779

{01}I was about to go to bed _____ one of my old classmates made a call to me. A.when B.as C.while D.that 解析：句型考查。Be about to do sth when… 刚要…这时…。句意：我刚要睡觉这时一位老同学打电话给我。
本题选A。
{02}Stephen Hawking believes that earth is unlikely to be the only planet       life has developed gradually. A.that B.where C.which D.whose 解析：略
本题选B。
{03}.Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire. A.it, it B.what, what C.it, what D.what, it 解析：略
本题选C。