(说明理由）________ lovely weather it is today!A.How B.How a C.What a D.WhatThey_____ the forest in a hurry last night.A.went across B.went through C.went on D.went by

cos2x+sin2x=________（请说明理由!） 初中历史题（说明理由） （说明理由,写在纸上也行） （√-2）等于（ ） A.2i B.-2i C.(√2)i D.(-√2)i 说明理由：________ 在等腰梯形ABCD中,对角线AC＝BC＋AD,则角DBC的度数是________(请简要说明理由） 17 ,19 ,________,29 ,31 ,37A、21 B、23C、25 D、27说明理由 Come on,children!Help ________ to some meatA.yourself B.yourselves请说明理由 mouse的复数是________ (A) mice (B) mouses 并说明理由 ________(watch) too much TV is bad for your eyes .解释并说明理由 I live in China.________ is a big country.(A) It(B) She并说明理由 What ________ you _________(do)in your free time.说明理由 ________(look) at zhe picture,please!该填什么?请说明理由. The woman is very grateful _____him ________ his help.解释句意并说明理由. 填介词,说明理由,He embarked ________ a new career as a teacher. 写出下列各点的经纬度 G:_______ H:________ 请说明理由, I can see and hear teacher ________（clear).适当形式填空 说明理由 Snakes ________( not have )ears ,用don’t have 还是 have no更好,说明理由, ________(that)are apples.用适当形式填空,告诉填什么,并说明理由.