单选题：We may infer from the passage that future therapeutic uses o

题目分类：英语六级
题目类型：单选题
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题目内容：

We may infer from the passage that future therapeutic uses of stem cells will be unlikely unless（　）. A．human stem cells are used in the research
B．a lot more private donations can be secured
C．more federal money is used for the research
D．talented scientists are involved in the research

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Theauthorbelievesthataviciouscirclecanturnintoavirtuouscircl

Theauthorbelievesthataviciouscirclecanturnintoavirtuouscirclewhen________.A．wome

分类：英语六级题型：单选题

肺的静态顺应性越大，表示（　　）

肺的静态顺应性越大，表示（　　）A．肺的弹性阻力大，肺扩张程度小 B．肺的弹性阻力小，肺扩张程度小 C．肺的非弹性阻力大，肺扩张程度大 D．肺的弹性阻力小，肺扩

分类：英语六级题型：单选题

Mr. Smith was the only witness who said that the fire was __

Mr. Smith was the only witness who said that the fire was ________. A．mature B．d

分类：英语六级题型：单选题

________ the danger from enemy action, people had to cope wi

________ the danger from enemy action, people had to cope with a severe shortage

分类：英语六级题型：单选题

作为理想的饮用水水源首选应是（　　）

作为理想的饮用水水源首选应是（　　）A．降水 B．水库水 C．江河水 D．深层地下水 E．浅层地下水

分类：英语六级题型：单选题