营养品质指农产品（）和（）。
参考答案：营养物质的成分；含量
把三个备选词语的序号分别填到下面句子的空白处。
（A．危险 B．灾难 C．灾害）
地震是自然_____中对人类_____最大的_____之一。
It rained a lot during their journey, so they have had a good time. [ ]
A. can't
B. must
C. shouldn't
D. might
