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.\

19（）

A.taking

B.grasping

C.sucking

D.catching

患者女，52岁，因“血尿、排尿不畅1周”来诊。经检查诊断为膀胱癌，并行膀胱部分切除术。家人因为担心患者无法承受患癌症的事实，要求医务人员不要告诉患者。

关于是否告知患者患病的真相，叙述正确的是（）

A.无论如何都应该告知患者真相，因为患者有知情权

B.医务人员应尊重家属意愿，不告诉患者实情

C.在评估是否告知时，最相关的测试标准是看“告知真相本身是否会导致该患者身心受到伤害”

D.患者有自主能力，应该由患者自己做主

E.应该告诉患者病情，让其参与选择治疗方案，否则对她来说是不公平的

F.应该告诉患者病情，因为对患者讲真话即诚实，而诚实则是维系医患关系的纽带