问题
选择题
下列属于人在寒冷中的身体变化的是
①皮肤血管收缩 ②增加皮肤的血流量 ③汗液分泌增多 ④汗液几乎不分泌 ⑤甲状腺激素分泌增多 ⑥肾上腺髓质分泌的肾上腺激素增多 ⑦骨骼肌颤栗 ⑧代谢活动增强[ ]
A．①④⑤⑥⑦⑧
B．①②③⑤⑥⑦
C．④⑤⑥⑦⑧
D．①③④⑦⑧
答案
答案：A
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下列属于人在寒冷中的身体变化的是
①皮肤血管收缩 ②增加皮肤的血流量 ③汗液分泌增多 ④汗液几乎不分泌 ⑤甲状腺激素分泌增多 ⑥肾上腺髓质分泌的肾上腺激素增多 ⑦骨骼肌颤栗 ⑧代谢活动增强[ ]
A．①④⑤⑥⑦⑧
B．①②③⑤⑥⑦
C．④⑤⑥⑦⑧
D．①③④⑦⑧
答案：A
| 阅读短文，选择正确的单词，并在空格处正确书写单词。 | |
Because he can 2___________ in the lake and eat lots of ice-creams. But I don't like summer. It's too hot. I like 3___________. It's warm. I can plant trees. My parents like fall. Because their birthdays are both in September and 4___________. On the weekends, we usually visit grandparents. Sometimes we go hiking and 5___________ mountains. We have a happy family! |