某玩具店用6000元购进甲、乙两种陀螺,甲种单价比乙种单价便宜5元,单独买甲种比

题型:选择题

问题:

某玩具店用6000元购进甲、乙两种陀螺,甲种单价比乙种单价便宜5元,单独买甲种比单独买乙种可多买40个.设甲种陀螺单价为x元,根据题意列方程为(  )
A.
6000
x
=
6000
x-5
+40
B.
6000
x
=
6000
x-5
-40
C.
6000
x
=
6000
x+5
+40
D.
6000
x
=
6000
x+5
-40
考点:分式方程的应用
题型:选择题

黄柏的显微特征( )

A.石细胞类圆形、方形,外壁较薄
B.石细胞多呈分枝状
C.乳汁细胞中含有髓丝
D.有晶鞘纤维
E.薄壁细胞含草酸钙砂晶

题型:选择题

阅读理解。

     Most people look forward to retirement as a time when they can finally take up activities that they never

had the time or energy to pursue before. But some recent studies on people in their golden years are disturbing:

they suggest that retirees are more likely to suffer from depression and possibly higher rates of other diseases

such as heart disease and high blood pressure. That's why a new study of French workers is welcome news.

     Led by Hugo Westerlund, a professor of psychology at Stockholm University, the study of more than

14,000 workers found lower rates of depression and fatigue (疲劳) in people after they got retired while they

were still employed.

     The scientists followed employees of the French National Gas and Electric Company for 14 years. They

found in the year immediately after retirement, the volunteers reported 40% fewer depressive symptoms than

they had in the year before their retirement. The researchers also found an 81% drop in reports of both mental

and physical fatigue over the same time period.

     Clearly, said Westerlund, much of these decrease in physical and mental fatigue can be traced back to relief

from the stresses of work. The decline in depressive symptoms suggests that retirement may be having a

positive mental effect, too, which may have a lot to do with the generous pensions (养老金) that French

workers enjoy. Most retirees in that country still benefit from about 80% of their yearly salaries.

     "The economic or financial situation in retirement is very important," Westerlund says. "We don't know if

the decrease in fatigue and depressive symptoms is because of the removal of something bad while in work

or the addition of something good while in retirement. But no matter the reason, if life in retirement is not

comfortable, then we won't see the improvements we did."

     However, in European nations like France, governments are considering changes to pension plans, which

may affect retirees' health after they leave their jobs-with less of a financial safety net, workers may no longer

seem so mentally and physically happy to be out of work.

(Note: Answer the questions or complete the statements in NO MORE THAN EIGHT WORDS.)

1. According to some recent studies, retired people may have depression and higher rates of other diseases

    like _______.

2. Westerlund's group found that in the year just after the retirement most retired French workers felt much less

    tired both _______.

3. What does the word "improvements" in paragraph 5 refer to? 

    ________________________________________________________________________________________

4. Retirement may make people happier with ______.

题型:选择题

下列哪种是硫脲类抗甲状腺药可引起的严重不良反应()

A.黏液性水肿

B.心动过缓

C.粒细胞缺乏症

D.低蛋白血症

E.再生障碍性贫血

题型:选择题

事业单位的修购基金是按事业结余和经营结余的一定比例提取的,因此,修购基金属于结余分配的内容。(  )

题型:选择题

微分器当机组甩负荷时,加速关闭(),以限制()的一种装置。

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