1It is never harmful ___ you to be polite and gentle to others and___,as is often the cased,you can get what you want.A to;thus Bfor,thus;Cof;therefore Dwith;however2It still puzzles the sceince world why some mammals produce their young____ and hatc
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1It is never harmful ___ you to be polite and gentle to others and___,as is often the cased,you can get what you want.A to;thus Bfor,thus;Cof;therefore Dwith;however2It still puzzles the sceince world why some mammals produce their young____ and hatc
1It is never harmful ___ you to be polite and gentle to others and___,as is often the cased,you can get what you want.
A to;thus Bfor,thus;Cof;therefore Dwith;however
2It still puzzles the sceince world why some mammals produce their young____ and hatching while others____ to young babies
Alying eggs,giving birth B by laying eggs;by giving birth
Cby laying eggs;give birth Dlaying eggs;giving birth
请注明为什么
1It is never harmful ___ you to be polite and gentle to others and___,as is often the cased,you can get what you want.A to;thus Bfor,thus;Cof;therefore Dwith;however2It still puzzles the sceince world why some mammals produce their young____ and hatc
1B 翻译: 对别人礼貌友好对你不会有丝毫伤害,而且情况常常是,你能得到你想要的
be harmful for sb to do sth 做sth对sb 是有害的
thus 和therefore,可以互换
2C
翻译:在科学界依然有一个困惑,为什么一些哺乳动物通过产蛋和孵化的方式来产子,而其他的哺乳动物是生育婴儿.
by是“通过……方式”,作介词,后面动词要加ing
lay eggs 产蛋
give birth to 生育 这里用give,而不是giving,因为这里是与前面的produce平衡.
希望对你有帮助
BC