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【单选题】
《黄河大合唱》包括几首独唱歌曲A.
1
B.
2
C.
3
D.
4
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【简答题】Fred: When do you usually have your computer class?Jane: ______.
【单选题】下列关于免疫功能的叙述不正确的是( )
A.
排除和消灭侵入人体的病原微生物
B.
及时清除体内衰老、死亡或损伤的细胞
C.
免疫总是对人体有益的，免疫能力越强越好
D.
随时识别和清除体内产生的异常细胞
【单选题】甲、乙、丙三组小鼠不同的免疫器官被破坏,其中甲组仅有体液免疫功能,乙组和丙组丧失了特异性免疫功能。现给三组小鼠分别输入造血干细胞,发现仅有乙组恢复了细胞免疫功能。有关原因分析,正确的是
A.
甲组胸腺被破坏，乙组骨髓被破坏，丙组骨髓和胸腺均被破坏
B.
甲组骨髓被破坏，乙组胸腺被破坏，丙组骨髓和胸腺均被破坏
C.
丙组骨髓被破坏，甲组胸腺被破坏，乙组骨髓和胸腺均被破坏
D.
乙组骨髓被破坏，丙组胸腺被破坏，甲组骨髓和胸腺均被破坏
【单选题】—Miss Sun has taught_____ Chinese for about 10 years. —You are lucky. _____ is a very good teacher.
A.
ours ; She
B.
our ; He
C.
us; She
D.
us ; He
【单选题】Between whom did the problem arise when Jane went back to work?
A.
Jane and the children.
B.
Jane and Bill.
C.
Bill and the children.
D.
Jane and the neighbour.
【单选题】—____? —When she was seventeen.
A.
When was Jane born
B.
Who do you admire
C.
How old was Jane
D.
When did Jane win the Olympic medal
【单选题】下列关于免疫功能的叙述,不正确的是( )
A.
清除体内衰老、死亡和损伤的细胞
B.
抵抗抗原的侵入，防止疾病的产生
C.
监视、识别和清除体内产生的异常细胞
D.
免疫总是对人体有益的
【单选题】What is the result of the major oil explorers’ change in exploration?
A.
Improved returns at lower prices
B.
Improved returns at higher prices
C.
High costs and high risks
D.
High risks and improved returns
【单选题】What was the major change in agriculture during the 19th century?
A.
Crop production became increasingly specialized
B.
Economic depressions lowered the prices of farm produce.
C.
New banking laws made it easy to buy farmland
D.
The United States increased its agricultural imports.
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