什么是开架借阅?
参考答案:
图书馆允许读者进行流通书库并直接在书架上自己挑选书刊的借阅体制。
将一植株放在密闭玻璃罩内,置于室外一昼夜,获得实验结果如下图所示。下列有关说法错误的是:
A.图乙中的b点对应图甲中的B点
B.图甲中的F点对应图乙中的g点
C.到达图乙中的d点时,玻璃罩内的CO2浓度最高
D.经过这一昼夜之后,植物体的有机物含量会增加
—Excuse me , could you please tell me which gate______?
—Er , sorry , I don’t know that ,either . [ ]
A. we have to go to
B. we had to go to
C. did we have to go to
D. should we have to go to