问题 选择题

黄冈是我国重要的商品棉生产基地.下列是棉花种植过程中所采取的措施和原因分析,其中有错误的是(  )

A.棉花营养钵育苗既能保持壮苗,也便于防止移栽幼苗根与根毛受损,提高成活率

B.合理密植能让植株充分接受光照,提高总产量

C.棉花在生长过程中要灌溉浇水,棉花吸收的水分主要用来合成纤维物质

D.棉花打顶能有效解决营养生长与生殖生长之间的矛盾

答案

A、营养钵育苗移栽时相当于带土移栽,植物吸水的主要部位根成熟区的根毛,带土移栽幼苗能防止根毛受损,增强幼苗的吸水能力,因此提高成活率.故不符合题意.

B、合理密植能让植株充分接受光照,有利于光合作用进行,制造的有机物多,因此可以提高总产量.故不符合题意.

C、植物通过根从土壤中吸收水分,吸收来的水只有大约1%当做光合作用的原料被植物体利用,大约99%都通过绿色植物的蒸腾作用以水蒸气的形式散发到大气当中去了.因此棉花吸收的水分主要用来合成纤维物质,这句话是错误的.符合题意.

D、打顶的原理是去掉茎的生长点,抑制生长素分泌,目的是抑制营养生长促进生殖生长,使植物多开花结果.不符合题意.

故选:C

问答题
阅读理解

There are various aspects that go into making a successful school, and success can be measured in various ways. Often, the teachers are praised for a school’s success and blamed for its failure. Yet, in order for a school to be effective, it must be a place where teaching and learning can easily take place, and that requires the hard work of more than just educators. Students must take learning into their own hands and feel as if what they are doing is as important as it actually is. This can only be done with the cooperation of every adult that is involved in the students’ life. Some of these individuals often go unnoticed, yet the role they play in the students’ lives is immeasurable.

In the school, administrative assistants greet students at the start of the day and answer a large quantity of questions. When an assistant remembers a student’s name or even something special about that student, it communicates to him that he is cared for. The assistant can also give that extra encouragement for a student to make better choices, especially when they are visiting the principal’s office.

Meanwhile, though cafeteria workers have a short space of time to interact with students, they can make a big difference as well. Beyond meeting nutritional needs, cafeteria workers may also on occasion meet the emotional needs of the students they serve. Students benefit from positive interaction with adults, and cafeteria workers may give that extra bit of encouragement that a child needs.

Custodians (管理员) are usually underappreciated for what they offer to schools. They have to be knowledgeable about everything from cleaning to fixing the most intricate (复杂的) tools. They get to school early in the morning before teachers arrive and lock up late at night after the last student has left from the after-school event. They also make sure teachers are equipped with the necessary items and prepare the rooms so that they are ready for learning. A great custodian also gives that kind word or extra smile to that student who needs it most.

小题1:The purpose of the passage is to _______.

A.emphasize the role teachers play in a school

B.highlight the contributions of other staff at school besides teachers.

C.tell us who make the greatest contributions to a school

D.explain what contributes to the success of a student小题2:If an assistant remembers a student’s name, the student will feel that _________.

A.he is paid particular attention to

B.he is special

C.he has done something wrong

D.he has made progress in study小题3:Which of the following is TRUE about cafeteria workers?

A.It’s enough for them to cook for the students.

B.It’s hard for them to interact with the students.

C.They have the most interaction with students at school.

D.They can also meet the emotional needs of the students.小题4:How does the author feel about the staff mentioned in the text?

A.Disappointed.

B.Dissatisfied.

C.Appreciative.

D.Doubtful.