根据句意和首字母提示完成下列句子。

小题1:There are sixty m___________ in an hour．

小题2:He is ill, and his i__________ makes us feel sad．

小题3:A lot of t__________ are visiting the Great Wall, so it is very crowded．

小题4:Good food and e__________ help me to study better．

小题5:It is n_________to eat a balanced diet.

膨胀土的参数如表，计算胀缩变形量接近（）。

A.34mm

B.30mm

C.28mm

D.147mm