【单选题】孟子的“生于优患,死于安乐”告诉我们( )
D.
事在人为,在逆境中积极创造条件改变自己的处境,终将成功
【单选题】Life is not ( ) and will not be fair.
【单选题】设 是微分方程 的两个解,则 ( 为任意常数)是( )
【单选题】设 是方程 的( ),则 为任意常数)是该方程的通解.
【多选题】人体体温能自动调控在37度,其原因是( )。
【单选题】7) In order to find out the cause of the problem, the engineer did all of the following EXCEPT______ . A) jot down the time of day B) check out the gas used C) measure the time for the trip D) o...
A.
jot down the time of day
B.
check out the gas used
C.
measure the time for the trip
D.
order a new engine for the car
【单选题】After the flood, what we did first was to provide for the homeless families.