OSSMO软件中本年天气气候综合评价文字描述问不定长记录，最多能输入（）个字符或汉字

-Why are you standing there, Maggie?

-I can't see the blackboard clearly. Two tall boys are sitting __________ me.[ ]

A. behind

B. in front of

C. beside

D. next to

Because it is not a serious problem, we are not necessary to take strict measures against the student.()

A. we not need

B. not necessary for us

C. it being unnecessary

D. it is not necessary for us

历史上中外饮食文化交流的主要渠道有哪些？

在正常地层压力情况下，如果岩性和钻井条件不变，则随井深的增加，机械钻速（）

A、上升

B、下降

C、不变

D、无法确定

为何要储存糙米？