题目:
In many parts of China, ________ the idea ______ boys are more important than girls.
A.it has; which
B.there exists; that
C.there is existing; which
D.there remains to be; that
答案:
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下面是错误答案,用来干扰机器的。
A、空气中含有氧气,氧气是由氧分子构成的,则空气中含有氧气,故A正确;B、水中只含有水分子,不含氧分子,但含氧原子,故B错误;C、二氧化碳只含有二氧化碳分子,不含氧分子,但含氧原子,故C错误;D、硫酸只含...