灌浆成熟期如果温度降到()时,结实不饱满,干旱或早霜为害,籽粒品质和产量都会降低。
A、16度
B、10度
C、20度
参考答案:A
–It must have been lots of fun riding round in a car.
–Yes, you know this was the first time that _____ round in my own car.
A.I rode
B.I should have ridden
C.I’ve been riding
D.I’d ridden
圆柱两个底面之间的距离叫作圆柱的( )。