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【单选题】
生活中很多光学器件含有透镜，下列光学器件中关于透镜的说法正确的是（　　）
A.
教学用的投影仪利用凸透镜成正立放大的实像
B.
显微镜的物镜相当于凸透镜，目镜相当于凹透镜
C.
照相机中“调焦环”的作用是调节凸透镜焦距的大小
D.
近视眼患者眼睛的晶状体变厚，应佩戴凹透镜矫正
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参考答案：
举一反三
【单选题】数据传输速率通常以( )为单位进行表示
A.
位
B.
字节
C.
赫兹
D.
以上均不是
查看完整题目与答案
【单选题】双子叶植物根的增粗是由于形成层和( )共同活动的结果
A.
原生分生组织
B.
初生分生组织
C.
木栓形成层
D.
保护组织
查看完整题目与答案
【单选题】数据传输速率通常以( )为单位进行表示
A.
位
B.
字节
C.
赫兹
D.
以上都不是
查看完整题目与答案
【多选题】双子叶植物木栓形成层的活动结果是形成( )。
A.
木栓层
B.
栓内层
C.
次生木质部
D.
次生韧皮部
查看完整题目与答案
【多选题】双子叶植物木栓形成层的活动结果是形成( )。
A.
木栓层
B.
栓内层
C.
次生韧皮部
D.
次生木质部
查看完整题目与答案
【单选题】Part A Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D . Mark your answers on ANSWER SHEET 1. For centuries, explorers have risked their lives ...
A.
to display their country's military might
B.
to accomplish some significant science
C.
to find new areas for colonization
D.
to pursue commercial and state interests
查看完整题目与答案
【简答题】Identifying Contrasting Information The two texts present arguments which contain a number of contrasting points. Read the table below and then find and read again particular parts of the texts in ord...
查看完整题目与答案
【单选题】Part A Directions: Read the following three texts. Answer the questions on each text by choosing A, B, C or D. Mark your answers on ANSWER SHEET 1. As my train was not due to leave for another hour, I...
A.
to claim his suitcase
B.
to pay at the luggage office
C.
to prove that he had paid at the luggage office
D.
to prove that he had bought the suitcase
查看完整题目与答案
【单选题】Part A Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points) After the terrorist attacks in America last September, terrorist risk becam...
A.
insurance companies increased premiums.
B.
airlines seek to avoid legal liabilities.
C.
terrorist attacks left insurers panicked.
D.
terrorist risk is unlikely to be insured.
查看完整题目与答案
【简答题】Part A Directions： Read the following four texts. Answer the questions below each text by choosing A， B， C or D. Mark your answers on ANSWER SHEET 1. （40 points） Text 1 If you were to examine the birt...
查看完整题目与答案
相关题目：
【单选题】数据传输速率通常以( )为单位进行表示
A.
位
B.
字节
C.
赫兹
D.
以上均不是
查看完整题目与答案
【单选题】双子叶植物根的增粗是由于形成层和( )共同活动的结果
A.
原生分生组织
B.
初生分生组织
C.
木栓形成层
D.
保护组织
查看完整题目与答案
【单选题】数据传输速率通常以( )为单位进行表示
A.
位
B.
字节
C.
赫兹
D.
以上都不是
查看完整题目与答案
【多选题】双子叶植物木栓形成层的活动结果是形成( )。
A.
木栓层
B.
栓内层
C.
次生木质部
D.
次生韧皮部
查看完整题目与答案
【多选题】双子叶植物木栓形成层的活动结果是形成( )。
A.
木栓层
B.
栓内层
C.
次生韧皮部
D.
次生木质部
查看完整题目与答案
【单选题】Part A Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D . Mark your answers on ANSWER SHEET 1. For centuries, explorers have risked their lives ...
A.
to display their country's military might
B.
to accomplish some significant science
C.
to find new areas for colonization
D.
to pursue commercial and state interests
查看完整题目与答案
【简答题】Identifying Contrasting Information The two texts present arguments which contain a number of contrasting points. Read the table below and then find and read again particular parts of the texts in ord...
查看完整题目与答案
【单选题】Part A Directions: Read the following three texts. Answer the questions on each text by choosing A, B, C or D. Mark your answers on ANSWER SHEET 1. As my train was not due to leave for another hour, I...
A.
to claim his suitcase
B.
to pay at the luggage office
C.
to prove that he had paid at the luggage office
D.
to prove that he had bought the suitcase
查看完整题目与答案
【单选题】Part A Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points) After the terrorist attacks in America last September, terrorist risk becam...
A.
insurance companies increased premiums.
B.
airlines seek to avoid legal liabilities.
C.
terrorist attacks left insurers panicked.
D.
terrorist risk is unlikely to be insured.
查看完整题目与答案
【简答题】Part A Directions： Read the following four texts. Answer the questions below each text by choosing A， B， C or D. Mark your answers on ANSWER SHEET 1. （40 points） Text 1 If you were to examine the birt...
查看完整题目与答案
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