斑疹伤寒早期常用来检测的标本是（） A.血液 B.尿液 C.痰液 D.脑脊液 E.组

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.\

3（）

A.realm

B.net

C.relation

D.web

男性，54岁，2个月前无明显诱因出现咳嗽，痰量少；进而出现发热，咳嗽加重，伴胸闷及活动后气促，呼吸困难进行性加剧。无咯血、盗汗，否认既往其他疾病。体检：半卧位，口唇轻度发绀。双肺底吸气相高调湿啰音，杵状指。血沉73mm/h，BP100/70mmHg。R28～30次/分；血气分析：PaO₂53mmHg，PaCO₂32mmHg，Ph7.43。正侧位胸片：双肺网状、小结节及小片状阴影，双下肺明显。嗜酸性粒细胞1%，肺功能示限制性通气障碍，DLco占预计值60.4%。

下列检查中最可能出现的情况是（）

A.FEV₁/FVC86%

B.ECG示SIQⅢTⅢ波形

C.外周血WBC14.2×10⁹/L，N占90%

D.PPD试验强阳性

E.血胆红素增高

下面一段文字有三处错误，请按要求修改。

　　友谊对人生是不可缺少的。虽然没有友情，生活就没有悦耳的和音。在没有友谊和仁爱的人群中生活，那种苦闷正犹如一句古代拉丁谚语所说：“一座城市如同一片旷野”。人们的面目淡如一张图案，人们的语言则不过是一片躁音。

（l）这段文字中有一个错别字，找出来并改正。

________改为________

（2）这段文宇中有一处标点符号用错，找出来并改正。

__________________________________

（3）这段文字中画横线的句子是病句，应改为：__________________________________

有一理想变压器的原、副线圈的匝数比为10：1，原线圈输入电压的变化规律如图甲所示，副线圈所接电路如图乙所示，P为滑动变阻器的触头．下列说法正确的是（　　）

A．副线圈输出电压的有效值为3V

B．副线圈输出电压的频率为50Hz

C．P向右移动时，原线圈中的电流变小

D．P向右移动时，灯泡L变亮

阅读王安石《答司马谏议书》中的一段文字，然后回答下面小题。
至于怨诽之多，则固前知其如此也。人习于苟且非一日，士大夫多以不恤国事，同俗自媚于众为善。上乃欲变化，而某不量敌之众寡，欲出力助上以抗之，则众何为而不汹汹然！盘庚之迁，胥怨者民也，非特朝廷士大夫而已；盘庚不为怨者故改其度，度义而后动，是而不见可悔故也。

在这段文字中，王安石还揭露了什么问题？