正处在生长发育时期的青少年，应多吃下列哪一组食物[ ]
A．含蛋白质和钙、磷多的
B．甜食
C．含脂肪成分多的
D．谷类
答案：A
超过标准体重（）时为轻度肥胖。
A．20%～30%
B．50%以上
C．30%～50%
D．40%～50%
—This pair of leather boots ______ nice. Can I ______?
—Certainly, Here you are. [ ]
A. look, try it on
B. look, try them on
C. looks, try it on
D. looks, try them on
