植物在阴雨天开花,产量会下降,对此,正确的解释是()。 A.阴雨天气,气温较低,

题型:选择题

问题:

植物在阴雨天开花,产量会下降,对此,正确的解释是(     )。

A.阴雨天气,气温较低,影响了花粉发育

B.降雨和较低气温,影响了昆虫的辅助授粉

C.雨水冲刷掉了大量的花粉,致使传粉不足

D.下雨天气温低、光照弱,影响了光合作用

考点:传粉和受精开花与花的结构果实和种子的形成
题型:选择题

设有下列二叉树:

对此二叉树中序遍历的结果为()。

A.ABCDEF

B.DBEAFC

C.ABDECF

D.DEBFCA

题型:选择题

阅读理解。

     Do you sweat, chew (嚼) your pencil, and feel butterflies in your stomach as your teacher hands out

a test? A lot of people get freaked out (兴奋) when it is time to take a test. It is natural to feel some stress

(压力) about taking tests. In fact, sometimes a little adrenaline (肾上腺素) is a good thing to jump-start you.

Here are some tips for taking tests:

     ● First, be sure you have studied properly. It sounds like a no-brainer, but if you are sure of the information,

you will have less reason to be worried.

     ● Get enough sleep the night before the test. Your memory recall (使想起, 回想) will be much better if you

have had enough rest. In a scientific study, people who got enough sleep before taking a math test did better

than those who stayed up all night studying.

     ● Listen closely to any instructions. As the teacher hands out the test, be sure you know what is expected

of you.

     ● Read the test through first. Once you have the test paper in front of you, read over the full test, checking

out how long it is and all the parts that you are expected to complete. This will allow you to estimate (估计)

how much time you have for each part and ask the teacher any questions. If something seems unclear before

you start, don't panic: ask.

     ● Focus (集中) on addressing each question one by one. As you take the test, if you do not know an answer, do not obsess (使困扰) over it. Instead, pass over the question and come back to it after you have answered

other questions.

     ● Relax. You might need a mini-break if you are so nervous that you blank out. Of course you cannot get

up and move around in the middle of a test, but you can wiggle (摆动) your fingers and toes, take four or five

deep breaths, or picture yourself on a beach or some other calm place.

     These tips should help most people, but some can get serious test-taking fear. You may need to ask a

teacher or counselor for help if you are one of them.

1. The underlined word "butterflies" means ________.

A. mad

B. smart

C. stupid

D. nervous

2. From the passage, we can know ________.

A. if we are nervous in the middle of a test, we can take pictures of ourselves

B. when we don't know some answers of the test, we must finish them right now

C. getting enough sleep the night before the test can help recall our memory easily

D. when we get the test paper we should read part of the test so that we can save time

3. The passage is mainly about ________.

A. how to do well in tests

B. how to read tests carefully

C. how to focus on questions of tests

D. how to ask a teacher for help about tests

题型:选择题

[中国银行] 净现值法中折现率的确定与风险有关,风险越大,折现率就越高。( )

题型:选择题

关于慢性病性贫血的描述不正确的是()

A.与慢性感染性疾病有关

B.与免疫功能异常疾病有关

C.可伴发溶血

D.恶性肿瘤中发生贫血常为轻中度贫血

E.均为正细胞正色素贫血

题型:选择题

安装传输设备机柜在用冲击钻打孔时,应采取什么防护措施()。

A.不采取其它措施,在安装完成后,一起清理

B.用纸片挡住,钻完孔后,用扫把清理灰尘

C.使用吸尘器进行吸尘

更多题库