搜题请搜索小程序“爱下问搜题”
问题 选择题

经济建设必须从本国国情出发，走自身特色的发展之路。20 世纪20 年代，体现苏俄特色社会主义建设道路探索的是[ ]

A．人道的、民主的社会主义

B．战时 * * 主义政策

C．斯大林的两个“五年计划”

D．新经济政策

答案

答案：D

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.\

16（）

A.offer

B.equip

C.help

D.provide
查看答案
填空题

我会找。（找出有错误的词涂上颜色）

1．画家　朋有　树林　耳朵　花园

2．公园　绿化　眼睛　高兴　平果

3．名亮　回答　砍树　上班　参加

4．告诉　房间　自已　动作　种田
查看答案