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为什么看不到宇宙的边 为啥白天看不到宇宙?白天的时候向天上看都是蓝蓝一片天,只有晚上才能看见宇宙,为什么 好莱坞是什么意思? 好莱坞指的什么意思? 谁可以解释一下好莱坞是什么意思! 好莱坞的具体意义和体制规则是什么 就是具体解释一下好莱坞的意思 exercise单三形式是什么 英语口语陪练怎么推广比较好英语口语陪练 怎么推广比较好 exercise ing形式是什么? exercise的现在分词形式是什么? exercise加动词的什么形式 五十年来世界各国对宇宙的探索有哪些新的进展 世界对宇宙的研究到了什么程度 世界对宇宙的研究达到什么程度 鸟在飞行时用什么辨别空中的物体 例如蝙蝠用声波 鸟听到什么声音或是看到什么容易乱飞 人无法听到飞行的蝙蝠发出的声音的原因是什么A蝙蝠没有发出声音 B蝙蝠发出的声音频率太高 C蝙蝠发出的声音频率太低 D蝙蝠发出的声音响度太小 he didn't leave until he heard the bell ring.可以用ing形式吗 You can not leave the room until the bell rings（改为同义句）You can ( ) the classroom ( ) the bell rings "make exercise"这个短语正确吗 Mr Li is very---.He goes out of the classroom very---(angry) The boy's mother is very grateful __Mr Li's helpA toB withC forD atDon't leave the baby at home__.It's __A alone;dangerB lonely;dangerousC along;dangerousD lonely;danger Mr Li is worrying about his old father 's health very much these days改为同义句改为同义句 Mr Li has _____ _______ ______ ______ about his old father's health these days 2.Jim advised me not to eat snacks in class 改为同义句 Jim ______ i live in flat 2 block 4 suzhou estate 和i live at flat 2 block 4 suzhou estate哪句对?是哪句好一点,一句是 live in 一句是live at ,flat 是指你住在第二个单位. 洋务派兴办军事工业和民用工业的目的是什么? He looked_____ (angry) at the boy. You should think carefully before you _b___anything. think carefully before you buy a carthink 在这里为什么不是动名词? The boy ___ in the class.and the teacher is angry with him think carefully before you leap The teacher was very angry and c——that the boy should go out of the classroom at once.c 后面填什么. Think carefully before you act.意为? Think carefully before you act.这句话的谓语是什么?