【多选题】在萜类化合物的分离中,可利用的特殊官能团有( )
【单选题】“If he does not let me use his bike, I won’t let him use my computer. ” Rewrite the sentence using the word “unless”.
A.
unless he does not let me use his bike, I won’t let him use my computer.
B.
unless he let me use his bike, I won’t let him use my computer.
C.
If he does not let me use his bike, unless I won’t let him use my computer.
D.
If he does not let me use his bike, unless I let him use my computer.
【单选题】What does the man mean?
A.
He allows the woman to close the door.
B.
He doesn't let the woman close the door.
C.
He feels rather cold too.
【简答题】自然铜主要含( )。A.含水硫酸钙(CaSO42H2O)B.含水硫酸钠(Na2SO410H2O)C.二硫化铁(FeS2)D.碳酸锌(ZnCO3)A. 1 B. 1 C. 1 D. 1
【多选题】在萜类化合物的分离中,可利用的特殊官能团有( )
【单选题】What does the professor mean when he says this?
A.
Let's review the material we just covered.
B.
Let's slow down because we're going again in a while.
C.
Let's take a break and start the class again in a while.
D.
Let's move on to the next topic.
【单选题】Let's hope he does not bring ______ girlfriend of his!
【单选题】My father seldom let me do that, ______.
【单选题】肾脏排H+的主要机理是
C.
H+与肾小管中小管液NH3结合,形成NH4+
【单选题】Who brought the big cake? [ ]