皮皮学，免费搜题
登录
搜题
【单选题】
易错题:每年春季是青蛙的繁殖季节,一只雌青蛙产卵约4000~5000个,卵受精后只有少数能发育为成 蛙。按照达尔文的进化学说,产生这种现象的原因是 ( )A.
生存斗争
B.
过度繁殖
C.
适者生存
D.
遗传和变异
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】听力练习Directions: Listen to the conversation. What are Mick and Paula’s New Year’s resolutions? Circle the correct answers. What is Paula's New Year's Resolution?
A.
Study modern art
B.
Get a new job
C.
Study modern dance
D.
Join more clubs
【简答题】听力-餐饮单词Listen and circle the word you hear in each pair.
【简答题】听力-Listen and circle the number in each pair that you hear first in each conversation.
【单选题】SECTION B PASSAGES Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow. 听力原文： When Iraqi troops blew up hundreds of ...
A.
The threat of poisonous desert animals and plants.
B.
The exhaustion of energy resources.
C.
The destruction of oil wells.
D.
The spread of-the black powder from the fires.
【单选题】SECTION B PASSAGES Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow. 听力原文： When Iraqi troops blew up hundreds of ...
A.
The threat of poisonous desert animals and plants.
B.
The exhaustion of energy resources.
C.
The destruction of oil wells.
D.
The spread of the black powder from the fires.
【多选题】听力——Listen and circle the expressions that sound polite.选出你认为礼貌的语气。
A.
One monent, please.
B.
I'll transfer your call.
C.
The number is 2442
D.
I'll send someone up right away.
E.
Hold the line, please.
F.
I'll connect you with the operator.
【单选题】听力练习Directions: Listen to the conversation. What are Mick and Paula’s New Year’s resolutions? Circle the correct answers. What is Mick's New Year's Resolution?
A.
Make more money
B.
Get a new job
C.
Study modern art
D.
Learn to drive
【单选题】下列说法错误的是
A.
传感器是实现自动检测和自动控制的首要环节 让物体有了触觉、味觉和嗅觉
B.
传感器的功能可替代人类 5 大感觉器官
C.
传感器是获取自然和生产领域中信息的主要途径与手段
D.
传感器的静态特性指对静态的输入信号，传感器的输出量与输入量之间所具有相互关系
相关题目：
参考解析：
知识点：
题目纠错 0
发布
