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【简答题】
飞蝗是一种可以引起蝗灾的物种。随着种群密度的增加,体色会发生改变。散居型飞蝗体色呈绿色,聚居型飞蝗体色呈黑色。请回答下列问题: (1)从种群特征的角度分析,飞蝗种群密度增加的直接原因 ;随着种群密度的增加,散居型飞蝗的体色会由绿色逐渐变为黑色的根本原因是__________。 (2)科学家利用基因工程改造蝗绿僵菌并制成产品防治蝗灾,这属于_________(填“化学”或“生物”)防治。其中蝗绿僵菌与飞蝗的种间关系是________。 (3)飞蝗卵、幼虫、成虫分布呈分层现象,体现了_________的空间结构。 (4)研究飞蝗数量的增长规律的意义是 。
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参考答案：
举一反三
【单选题】The overall prevalence of cardiovascular disease in China is
A.
With the prosperity of society and economy, the general trend of cardiovascular disease in China has been declining.
B.
With the prosperity of society and economy, the general trend of cardiovascular disease in China has been on the rise.
C.
Irrational diet, smoking, drinking, and lack of exercise are not significant cardiovascular risk factors.
D.
The number of hypertensive patients in China shows a downward trend year by year.
E.
Inflammation ranks first in mortality rate for various diseases.
查看完整题目与答案
【单选题】We are leaving this afternoon, but we have not () our suitcases yet.
A.
trapped
B.
insulted
C.
packed
D.
invited
查看完整题目与答案
【简答题】A．various B．heart C．cardiovascular D．multiple
查看完整题目与答案
【单选题】口译听辨过程中,最需要抓住哪种信息?
A.
关键词（key words）
B.
生僻单词或词组（new words）
C.
讲者传达的语意（meaning）
D.
能够听懂的内容
查看完整题目与答案
【单选题】听辨过程中，关键要抓住什么信息？
A.
实义词和功能词
B.
生僻单词或词组
C.
讲者传达的语意
D.
能够听懂的内容
查看完整题目与答案
【单选题】鼻部疾病使用血管收缩剂的目的：
A.
收缩血管，减轻粘膜肿胀
B.
恢复鼻腔通气功能，减轻鼻塞
C.
帮助开放鼻窦开口，利于分泌物引流
D.
以上均是
查看完整题目与答案
【单选题】Which is correct for the classification of cardiovascular disease?
A.
Myocarditis is often caused by coronary atherosclerosis
B.
Pericardial effusion is a major vascular disease according to pathological anatomy
C.
Hypertension is often caused by damaging the heart valve
D.
Congenital and acquired cardiovascular diseases are classified according to pathological anatomy
E.
Different cardiovascular diseases can cause pathological changes in the endocardium, myocardium, pericardium and major blood vessels
查看完整题目与答案
【单选题】听辨过程中，需要抓住哪些信息
A.
关键词
B.
生僻单词或词组
C.
讲者传达的语意
D.
能够听懂的内容
查看完整题目与答案
【简答题】The NBSRI cardiovascular team identified the would-be patients with a___________
查看完整题目与答案
【判断题】袁世凯被称为名副其实的军阀的鼻祖。()
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】The overall prevalence of cardiovascular disease in China is
A.
With the prosperity of society and economy, the general trend of cardiovascular disease in China has been declining.
B.
With the prosperity of society and economy, the general trend of cardiovascular disease in China has been on the rise.
C.
Irrational diet, smoking, drinking, and lack of exercise are not significant cardiovascular risk factors.
D.
The number of hypertensive patients in China shows a downward trend year by year.
E.
Inflammation ranks first in mortality rate for various diseases.
查看完整题目与答案
【单选题】We are leaving this afternoon, but we have not () our suitcases yet.
A.
trapped
B.
insulted
C.
packed
D.
invited
查看完整题目与答案
【简答题】A．various B．heart C．cardiovascular D．multiple
查看完整题目与答案
【单选题】口译听辨过程中,最需要抓住哪种信息?
A.
关键词（key words）
B.
生僻单词或词组（new words）
C.
讲者传达的语意（meaning）
D.
能够听懂的内容
查看完整题目与答案
【单选题】听辨过程中，关键要抓住什么信息？
A.
实义词和功能词
B.
生僻单词或词组
C.
讲者传达的语意
D.
能够听懂的内容
查看完整题目与答案
【单选题】鼻部疾病使用血管收缩剂的目的：
A.
收缩血管，减轻粘膜肿胀
B.
恢复鼻腔通气功能，减轻鼻塞
C.
帮助开放鼻窦开口，利于分泌物引流
D.
以上均是
查看完整题目与答案
【单选题】Which is correct for the classification of cardiovascular disease?
A.
Myocarditis is often caused by coronary atherosclerosis
B.
Pericardial effusion is a major vascular disease according to pathological anatomy
C.
Hypertension is often caused by damaging the heart valve
D.
Congenital and acquired cardiovascular diseases are classified according to pathological anatomy
E.
Different cardiovascular diseases can cause pathological changes in the endocardium, myocardium, pericardium and major blood vessels
查看完整题目与答案
【单选题】听辨过程中，需要抓住哪些信息
A.
关键词
B.
生僻单词或词组
C.
讲者传达的语意
D.
能够听懂的内容
查看完整题目与答案
【简答题】The NBSRI cardiovascular team identified the would-be patients with a___________
查看完整题目与答案
【判断题】袁世凯被称为名副其实的军阀的鼻祖。()
A.
正确
B.
错误
查看完整题目与答案
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