造成棉铃虫大暴发的原因有哪些?

素质教育就是不要学生刻苦学习，“减负”就是不给或少给学生留课后作业。

要求：对上述观点作出判断和分析。条理清楚，350字左右。

说出苗木立枯病的症状类型及主要病原菌。

试述心脏代偿功能的评估

在配合教育活动方面应掌握的技能有哪些？

下壁心肌梗塞时，典型的梗塞波形出现在：

简述美育的任务。

钻探工的职责是什么？

TEXT C

There are two factors which determine an individual's intelligence. The first is the sort of brain he is born with.

Human brains differ considerably , some being more capable than others. But no matter how good a brain he has

to begin with, an individual will have a low order of intelligence unless he has opportunities to learn. So the

second factor is what happens to the individual— the sort of environment in which he is brought up. If an

individual is handicapped(不利 ) environmentally, it is likely that his brain will fail to develop and he will never

attain the level of intelligence of which he is capable.The importance of environment in determining an individual's intelligence can be demonstrated by the case history of the identical twins, Peter and Mark. Being identical, the twins had identical brains at birth, and their growth processes were the same. When the twins were three months old, their parents died, and they were

placed in separate foster(抚养) homes. Peter was raised by parents of low intelligence in an isolated community

with poor educational opportunities. Mark was reared in the home of well-to-do parents who had been to college. He was read to as a child, sent to good schools, and given every opportunity to be stimulated

intellectually. This environmental difference continued until the twins were in their late teens, when they were

given tests to measure their intelligence. Mark's I. Q. was 125, twenty-five points higher than the average and

fully forty points higher than his identical brother. Given equal opportunities, the twins, having identical brains,

would have tested at roughly the same level.

11.This selection can best be titled____________.

A. Measuring Your Intelligence

B. Intelligence and Environment

C. The Case of Peter and Mark

D. How the Brain Influences Intelligence

12.The best statement of the main idea of this passage is that _______.

A. human brains differ considerably

B. the brain a person is born with is important in determining his intelligence

C. environment is crucial in determining a person's intelligence

D. persons having identical brains will have roughly the same intelligence

13.According to the passage, the average I. Q. is_______.

A. 85 . B. 100 C. 110 D. 125

14.The case history of the twins appears to support the conclusion that_______.

A. individuals with identical brains seldom test at the same level B. an individual's intelligence is determined only by his environment

C. lack of opportunity blocks the growth of intelligence

D. changes of environment produce changes in the structure of the brain

15.This passage suggests that an individual's I. Q. _______.

A. can be predicted at birth

B. stays the same throughout his life

C. can be increased by education

D. is determined by his childhood

某公司对外出口，原报价每箱50 美元 FOB 上海，现客户要求改报CFRC3%Hamburg 。问：在不减少收汇的条件下，应报多少?(该商品每箱毛重 40 千克，体积 0.05 立方米。在运费表中的计费标准为W/M 每运费吨基本运费为200 美元，另加收燃油附加费10%)