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【简答题】
The number of countries that are trying to reduce their CO2 emission is .................. every year.
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反馈参考答案：
举一反三
【单选题】某晶体管收音机原配好 8Ω 的扬声器，今改接 16Ω 的扬声器，已知输出变压器的原绕组匝数为 N 1 =250 匝，副绕组匝数为 N 2 =60 匝，若原绕组匝数不变，问副绕组的匝数应如何变动 （ ） 匝，才能阻抗匹配？
A.
85
B.
55
C.
35
D.
15
【简答题】Now that you're 16 years old, you should have more sense of (responsible) .
【单选题】You are _______ twenty—two . You should have more test .
A.
not ---any longer
B.
no longer
C.
not---any more
D.
no more
【简答题】Now that you’re 13 you should have more sense of 8 .
【简答题】Now that you’re 13 you should have more sense of ______.
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