主题词一般由（）个词或词组构成，一般不超过（）个。
A.3至5；7
B.3至6；11
C.2至5；5
D.2至6；10
参考答案：A
—The skirt is too expensive; its color too dark, and….
—_______. Is there anyone so particular like you?
A．Take it or leave it
B．Can’t complain too much.
C．Go ahead.
D．Cheer up.
诱导轮实质上是一个轴流式叶轮。
