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【简答题】
是非判断题：（每题1分，共10分，对的画“√”，错的画“×”） （1）昆虫的翅膀上没有肌肉，所以昆虫的飞行运动没有肌肉参加．______ （2）完成一个运动只需要由一块骨骼肌独立完成．______ （3）某一块骨骼肌两端的肌腱附着在同一块骨骼上．______ （4）地球上的哺乳动物的种类大约有4000多种．______ （5）人体的每一个动作的完成，是由多组骨骼肌群共同作用的结果．______ （6）蚯蚓虽有肌肉，但没有骨骼，所以不能快速运动．______ （7）只有哺乳动物才是恒温动物．______ （8）水中生活的动物都用鳃呼吸．______ （9）水中生活的动物既有无脊椎动物，也有脊椎动物．______ （10）软体动物身体柔软，容易受伤，所以一定要用贝壳保护身体．______．
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举一反三
【简答题】everyone are in a good mood. Spring has always been ______
【简答题】The assumption has always been that the two aims were complementary.It has always been ______.
【简答题】The railway station has always been a fascinating place, representing departure as well as ______. (arrive)
【单选题】The English language has always changed, but the rate of change has been uneven.
A.
portion
B.
speed
C.
standard
D.
measure
【单选题】George Washington______.
A.
always will and always has been an American hero
B.
always has and always will an American hero
C.
always has and always will be an American hero
D.
always has been and always will be an American hero
【多选题】关于惯性环节的频率特性,下列说法正确的是:
A.
极坐标为第四象限内的一个半圆
B.
对数幅频特性由两条直线构成，斜率分别为0与-1，转折频率为1/T。
C.
对数相频特性的0至-90度范围内中心对称的曲线
D.
对数幅频特性是一条光滑曲线，有两条渐近线，斜率分别为0与-1，转折频率为1/T。
【简答题】Red-light running has always been regarded as a minor wrong, and so it has never been taken seriously. When the violation becomes habitual, however, a great deal more than a traffic problem is involve...
【单选题】As discovered by expedition scientists, Antarctica has not always been so cold as it is today, so has the Arctic.
A.
Right
B.
Wrong
C.
Not mentioned
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