【单选题】()是希腊科学和近代科学区别的一个主要特征。
【单选题】砂按细度模数分为粗、中、细三个规格,其细度模数分别为( )。
A.
Mx =3.7~3.0为粗砂,Mx =2.9~2.3为中砂,Mx =2.2~1.6为细砂
B.
Mx =3.7~3.0为粗砂,Mx =2.9~2.2为中砂,Mx =2.1~1.6为细砂
C.
Mx =3.7~3.1为粗砂,Mx =3.0~2.3为中砂,Mx =2.2~1.6为细砂
D.
Mx =3.7~3.1为粗砂,Mx =3.0~2.2为中砂,Mx =2.1~1.6为细砂
【单选题】Which statement of Carl Honore’s description of “the pace of modern life” is false?
A.
We are hurrying through our lives instead of actually living them.
B.
We are living the good life instead of the fast life.
C.
Every day is like a race against the clock.分秒必争
D.
We often lose sight of the damage.
【单选题】Which of the following statements is true?
A.
Modern social life relies significantly on the use of mobile phones.
B.
Mobile phones make romantic communication more difficult.
C.
Mobile phones encourage people to make friends.
D.
Mobile phones enable people of different countries to talk without translation
【判断题】Mot蛋白在鞭毛运动中起按钮作用,调控鞭毛正转或逆转。