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问答题
半索动物口腔背面向前伸出一条较短的盲管,是半索动物特有构造,称为（）
答案：
["口索"]
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问答题
specialize in; be true of; preside over; be exposed to; be stuck for; have no business doi
ng sth. see to it; average out; be out for sth, or to do sth; succeed in 9. All business companies are make a profit. That’s why the law must they don’t get away easily if they cheat us.
答案：
["out to","see to it that"]
