问题

Scientists have come to the conclusion ___________ the temperature on Earth is getting higher and higher.

A:What
B:that
C:which
D:when;

正确答案是：

同类题型

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－Why can’t Simon see the words on the blackboard－Because two tall boys are sitting ______ him.

－Bob, have youpacked yet－Yes, Mum.－Look over andthatyou have taken everything you need.