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【单选题】
Questions 18 to 20 will be based on the following conversation.
A.
No one knows. Scientists are studying it.
B.
Yes, because every planet has two north poles, a geographic north pole and a magnetic north pole.
C.
No. Some planets do not have a liquid iron center, so they do not create a magnetic field.
D.
Yes, because all planets spin.
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Questions 18 to 20 are based on the passages you have just heard.
A.
40,000 m2.
B.
30,000 m2.
C.
20,000 m2.
D.
10,000 m2.
【单选题】Questions 18 to 20 are based on the passage you have just heard.
A.
Science.
B.
Food.
C.
Health.
D.
Education.
【单选题】在布置自然角时,教师让幼儿讨论决定该饲养何种动物。这遵循了幼儿园环境创设原则中的( )。
A.
目标导向原则
B.
发展适宜性原则
C.
幼儿参与性原则
D.
经济性原则
【单选题】由于山顶风强,乔木生长困难,仅有灌丛及耐湿性草甸植被生长,而雾灵山山地草甸土主要分布在什么海拔高度
A.
700-1000米
B.
1000-1300米
C.
1300-1700米
D.
1700米以上