形成季风的原因主要包括( )①陆热力性质的差异 ②气压带和风带位置的季节移动③太阳活动 ④人类活动
A:①③
B:① ②
C:③ ④
D:② ④
下列说法不正确的是( )
Miss Zheng always says that it's important for us to _______ the test paper first before we write down the answers.
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