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【单选题】
He is always ready _____his friends.A.
to help
B.
help
C.
helps
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The Virgin Islands are located ______.
A.
in the Gulf of Mexico
B.
in the Pacific Ocean
C.
in the North Sea
D.
in the Caribbean Sea
【单选题】Which. of the following is NOT the reason why people prefer to use virgin' materials than use secondary ones?
A.
Production costs do not include the true costs of environmental impact.
B.
There axe subsidies to virgin materials.
C.
Using virgin materials can protect environment.
D.
The secondary materials are more expensive.
【简答题】教师家访时应该注意哪些问题?(参考“章节1.2.2”内容)
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