我国曾经著名的“三大荒”(见下图),如今已经变成了“三大仓”:“北大荒”变成粮仓

题型:选择题

问题:

我国曾经著名的“三大荒”(见下图),如今已经变成了“三大仓”:“北大荒”变成粮仓,“西大荒”变成棉仓,“南大荒”成为橡胶林和热带经济作物仓。下列有关“三大荒”描述正确的是(       )

A.“北大荒”农业发展主要的制约因素是光照

B.“北大仓”主要的粮食作物是玉米和冬小麦

C.“南大荒”橡胶、热带经济作物种植的主导因素是水分

D.“西大荒”棉花生产主要的气候优势是夏季光热充足,昼夜温差大

考点:农业生产活动对地理环境的影响工农业污染及其防治
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蟠桃果形与圆桃果形为一对相对性状(由等位基因H、h控制),蟠桃对圆桃为显性。桃树的蟠桃果形具有较高的观赏性。已知现有蟠桃树种均为杂合子,欲探究蟠桃是否存在显性纯合致死现象(即HH个体无法存活),研究小组设计了以下遗传实验,请补充有关内容。

(1)实验方案:____________,分析比较子代的表现型及比例;

(2)预期实验结果及结论:

①.如果子代____________,则蟠桃存在显性纯合致死现象;

②.如果子代____________,则蟠桃不存在显性纯合致死现象。

题型:选择题

BIAS指标是测算股价与()偏离程度的指标。

A.MA

B.MACD

C.PSY

D.OBV

题型:选择题

患者男性,25岁,左下腹痛伴脓血便半个月。查体腹部无异常,首先选用的检查方法是

A.大便常规菌培养

B.B超

C.钡剂灌肠透视

D.全胃肠钡剂检查

E.全结肠镜检查

题型:选择题

实验室在加热的条件下,用足量的氢气还原8.0g氧化铜,可得到铜多少克?

题型:选择题

阅读下面短文,请根据短文后的要求进行答题。(请注意问题后的字数要求)

     [l]Compared to people with bad attitudes, people _____ are less likely to suffer from colds. It's possible

that being positive helps the body fight illnesses.

     [2]In a previous study, people who tended to be cheerful and lively were least likely to develop coughs

and other cold symptoms. People who showed positive feelings were also less likely to mention symptoms

to their doctors, even when medical tests detected those symptoms.

     [3]Those findings were interesting, but they didn't prove that a person's attitude affects whether he or

she gets sick. Instead, it was still possible that a person's underlying personality is what matters.

     [4]Evidence suggests, for instance, that certain people are naturally more likely to be outgoing and

optimistic, with high self-esteem and a sense of control over life. This would mean that who we are, not

how we feel, ultimately decides our chances of catching colds.

     [5]To figure out which mattered more, personality or emotions, the researchers interviewed 193 healthy

adults. The results showed that everyone in the study was equally likely to get infected. Their symptoms,

however, differed depending on the types of emotions that they had reported over the previous fortnight.

     [6]Among those who reported good moods and had been infected with the flu virus, for example, 28

percent developed coughs and stuffy noses. On the other hand, those symptoms struck 41 percent of people

who had been less positive.

     [7]Scientists argue about whether negative emotions or positive emotions have a stronger effect on how

healthy we are. For now, it can't hurt to look on the bright side more often than not!

1. What's the main idea of the passage? (Please answer within 10 words)

    _____________________________________________________________________________________

2. Fillin the blank with proper words in the first paragraph (Please answer within 10 words) 

    _____________________________________________________________________________________

3. Which sentence in the passage can be replaced by the following one? But, their symPtoms were closely 

    related to the emotions they had claimed to have in the last two weeks.

    _____________________________________________________________________________________

4. Translate the underlined sentence in the third paragraph into proper Chinese.

    _____________________________________________________________________________________

5. Suppose one of your friends had got infected with the HINI flu give him/her at least three pieces of advice.

    (Please answer within 30 words)

    _____________________________________________________________________________________

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