植物生长所必需的最低限度土层厚度中,浅根性乔木生存的最小厚度为( )cm。
A.30
B.45
C.60
D.90
参考答案:C
将下列句子排序组成完整的对话。
1. Hmm. I want to join the Japanese-language club. How about you?
2. Me, too. Let's join the music club.
3. Here are all the clubs.
4. Oh no. I don't like chess. Do you like music?
5. Well, I can't speak Japanese. Hmm. I want to join the chess club. Can you play chess?
6. Oh, yes. I can sing and dance. I like music.
7. What club do you want to join?
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下列与伤寒作鉴别诊断正确的是()
A.恶性组织细胞病
B.流行性斑疹伤寒
C.疟疾
D.革兰阴性杆菌败血症
E.急性风湿热