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【单选题】
When a friend gave Tom a ticket he ________ to the game．A.
couldn’t help but go
B.
couldn’t help but going
C.
can’t help but to go
D.
can’t help but going
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【多选题】镰刀形红细胞贫血病患者血红蛋白β-链上第六位的谷氨酸被缬氨酸取代后，将产生哪些变化
A.
在 pH 7.0 电泳时，增加了异常血红蛋白向阳极移动的速度
B.
导致异常脱氧血红蛋白的聚合作用
C.
增加了异常血红蛋白的溶解度
D.
一级结构发生改变
【简答题】Speaker is afraid of______How does the fear affect him or her? a) She tries to wait and relax. b) She gets off and takes the next one. 2. a) He talks too fast and forgets things. b) He starts...
【单选题】镰刀形红细胞贫血病患者血红蛋白β链上第六位的谷氨酸被缬氨酸取代后，将产生哪种变化？（高阶）
A.
增加了异常血红蛋白的溶解度
B.
导致异常脱氧血红蛋白的解聚作用
C.
增加了异常血红蛋白向阳极移动的速度
D.
一级结构发生改变
【简答题】the second Speaker is afraid of______How does the fear affect him or her?
【简答题】the first speaker is afraid of______How does the fear affect him or her?
【单选题】镰刀形红细胞贫血病患者血红蛋白β链上第六位的谷氨酸被缬氨酸取代后,将产生哪种变化?
A.
增加了异常血红蛋白的溶解度
B.
导致异常脱氧血红蛋白的解聚作用
C.
增加了异常血红蛋白向阳极移动的速度
D.
一级结构发生改变
【单选题】What message is the speaker trying to convey?
A.
Kids should learn not to be afraid of monsters.
B.
Informative speeches can save lives.
C.
Carelessness can result in tragedies.
D.
Firefighters play an important role in America.
【简答题】the third speaker is afraid of______How does the fear affect him or her?
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