在桃花盛开的季节,低温阴雨的天气会导致桃花不能完成正常的受精作用,这时可用一定浓

题型:选择题

问题:

在桃花盛开的季节,低温阴雨的天气会导致桃花不能完成正常的受精作用,这时可用一定浓度的生长素类似物喷洒在花上,其目的是促进桃花的[ ]

A.基因突变

B.染色体加倍

C.果实发育

D.种子发育

考点:生长素的生理作用
题型:选择题

阅读理解。

     Do you know kind words and light music (轻音乐) have something to do with plants?

     Many people talk to their plants. Many people play music to their plants. And many people try very hard

to protect (保护) their plants from loud noises, strong lights, and unpleasant (讨厌的) smells (气味).

     That's not all. Some people are very careful (小心的) about what they say or do in front of plants. They

won't talk about unpleasant things. They won't beat (拍打) a fly (苍蝇) near their plants.

     Why? Those people are afraid that they may hurt their plants' feelings.

     Can you hurt a plant's feelings? Do plants have feelings? Professor Backster thinks so. Many pupils think

so. Even a few scientists think that plants have feelings.

     But most scientists (科学家) don't agree (同意). They don't think that plants can be happy, worried,

angry, loving or frightened (害怕). They don't believe that a plant's feeling can be hurt.

     Who is right? Then along came the experiments (实验) of professor Backster. From his experiments,

Backster decided that plants have feelings. He said that, like people, plants need love and kindness (亲切).

They can feel worried and happy.

     Two years later, in l 968. Baekster wrote about his experiments in a magazine (杂志). And much of the

world took notice (注意). Plant lovers of the world were happy.

1. The writer think kind words and light music ________  plants.

A. have nothing to do with

B. have something to do with.

C. are bad for

D. destroyed

2. Some people think loud noises and unpleasant smells ________.

A. can protect plants

B. have nothing to do with plants

C. can make plants grow better

D. can hurt plants

3. Some people think it is helpful to plants to ________.

A. play light music

B. talk about unpleasant things

C. shout loudly

D. beat a fly

4. ________ plants have feelings.

A. Only Backster believes

B. Nobody believes

C. Baekster and some other people believe

D. Most scientists believe

5. Backster wrote about his experiments in a ________.

A. book

B. magazine

C. novel (小说)

D. newspaper

题型:选择题

如图所示,在倾角为37°的斜坡上,从A点水平抛出一个物体,物体落在斜坡的B点,测得AB两点间的距离是75m,求:(g=10m/s2

(1)物体从A到B的运动时间;

(2)物体抛出时的速度大小。

题型:选择题

该患者解除外固定后,左侧肩、肘关节活动受限,应如何处理

A.进行关节各个活动方向的主动锻炼

B.应在麻醉下行手法扳正

C.行关节囊切开松解术

D.理疗

E.延长外固定1~2周

题型:选择题

读下图,也许你很容易认出她是我们的宝岛台湾,不知你是否能按提示把相应空白补上。

(1)台湾岛是我国第_____ 大岛,与台湾最近的省份是_____ 。(填简称)

(2)将图中字母所代表的海域的名称填写在下列横线上:

    C、__________ D、_________ B、____________

(3)台湾岛有许多美称,你知道与下列美称有关的物产吗?

  “东方甜岛”__________ “ 海上米仓”___________

(4)台湾岛地形以________ 为主,最高峰为________ 。人口和工业区主要分布在___________ ,台湾

    省利用自己的一些优势和条件,重点发展___________ 工业,形成了“______________________ ”型

    的工业。

(5)台湾岛地处亚欧板块与________ 板块的交界处,因而多火山、地震。

题型:选择题

程监理企业在建丑建全与建设单位的合作制度,及时进行信息沟通,增强相互间信任,这体现了工程监理企业从事建设工程监理活动应遵循的()准则。

A.守法 

B.诚信 

C.公平 

D.科学

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