它们也生蛋,在地球上生存了一亿四千多万年。
(1)
(2)
(牛津P697)They can’t exist_on_the money he’s earning.
他们靠他挣的那点钱无法维持生活。
There exists a good way to solve the existing problem in geography.有一个解决现存地理问题的好办法。
As is known to us,China came_into_existence as an independent country in 1949.
众所周知,在1949年中国以一个独立的国家存在了。
harmful adj.有害的
(牛津P803)Experts point out that fruit juices can be harmful to children’s teeth.专家指出果汁可能损害儿童的牙齿。
(1)be harmful to sb./sth.对某人/某物有害
(2) 对某人有害
(3)There is no harm in doing sth./It does no harm to do sth.
做某事是个好主意(或没有坏处)
Air pollution will get worse and this will be_harmful to people,for example,it can cause cancer.空气污染会加剧,而且这会对人们造成危害,例如,它可以引发癌症。
(2017·陕西卷信息匹配)Pets are amusing and entertaining,but we are in a way doing animals harm by making them live in a human environment.宠物好玩有趣,但我们从某种程度上让他们生活在人的环境是在伤害他们。
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