皮皮学，免费搜题
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【单选题】
在客色中,冬天的面色相应应为A.
稍白
B.
稍赤
C.
稍青
D.
稍黑
E.
稍黄
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】Two of the boys ________ while playing football.
A.
hurt
B.
were hurting
C.
got hurt
D.
had been hurt
【简答题】Baby girls make their way directly for dolls as soon as they can crawl, while boys will head for the toy cars, a study has shown. The findings, the first to show differences in very young babies, sug...
【单选题】下列何种行为属于大气自净作用（）。
A.
被植物吸收
B.
污染物下风侧浓度增加
C.
降落到地面又被风吹起再次进入大气
D.
转变成毒性更大的污染物
E.
污染物上升至平流层
【单选题】Three students from Changjiang college _____ while saving the ______ boys.
A.
got drown; drowning
B.
got drowned; drowning
C.
were drowned; drowned
D.
were drowning; drowning
【单选题】Why do American boys do better in math while girls usually excel in reading skills?
A.
Boys are interested in math while girls usually like reading.
B.
Boys have a math gene and girls have inborn reading skills.
C.
Boys get more training in math and girls get more training in reading.
D.
Boys are presupposed to be good at math and girls at reading.
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