【題目】There are students in our class. Twenty of them are girls and forty are boys.
A.fifty
B.sixty
C.seventy
D.eighty

【答案】B
【解析】句意：我們班有六十個學(xué)生。二十個女生四十個男生。根據(jù)后句可知20+40=60，sixty, A. 五十，C. 七十，D. 八十，所以答案是B。

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