采取吸引策略的企业，其竞争策略是以“()”取胜。B
A.物美
B.廉价
C.好用
D.青睐
参考答案：B
用化学符号表示
（1）五个二氧化碳分子______；（2）6个镁离子______；（3）正三价的铁元素______；（4）2个氢原子______；（5）氯化镁______；（6）氧化钙______．
Most boys _____ guns to dolls, while most girls _____ have dolls than guns. [ ]
A. would rather; prefer
B. prefer; would rather
C. would rather; would rather
D. prefer; prefer
