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问题 单项选择题

《传染病防治法》规定应予以隔离治疗的是（）

A.疑似传染病病人

B.甲类传染病病人

C.甲类传染病病人和病原携带者

D.乙类传染病病人和病原携带者

E.除艾滋病病人、炭疽中的肺炭疽以外的乙类传染病病人

答案

参考答案：C

单项选择题

我国将长期处于社会主义初级阶段，这一科学论断的依据是

A．社会主义发展的一般规律

B．马克思关于东方社会发展的理论

C．生产力与生产关系的矛盾运动规律

D．中国的具体国情
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单项选择题

Most plants can make their own food from sunlight, (1) some have discovered that stealing is an easier way to live. Thousands of plant species get by (2) photosynthesizing, and over 400 of these species seem to live by pilfering sugars from an underground (3) of fungi(真菌). But in (4) a handful of these plants has this modus operandi been traced to a relatively obscure fungus. To find out how (5) are (6) , mycologist Martin Bidartondo of the University of California at Berkeley and his team looked in their roots. What they found were (7) of a common type of fungus, so (8) that it is found in nearly 70 percent of all plants. The presence of this common fungus in these plants not only (9) at how they survive, says Bidartondo, but also suggests that many ordinary plants might prosper from a little looting, too.

Plants have (10) relations to get what they need to survive. Normal, (11) plants can make their own carbohydrates through photosynthesis, but they still need minerals. Most plants have (12) a symbiotic relationship with a (13) network of what are called my corrhizal fungi, which lies beneath the forest (14) . The fungi help green plants absorb minerals through their roots, and (15) , the plants normally (16) the fungi with sugars, or carbon with a number of plants sharing the same fungal web, it was perhaps (17) that a few cheaters—dubbed epiparasites—would evolve to beat the system. (18) , these plants reversed the flow of carbon, (19) it into their roots from the fungi (20) releasing it as "payment.\

1（）

A.but

B.if

C.because

D.though
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