题干
Shanghai lies _______ the east of China and _______ the northeast of Guangdong.
A：in; to
B：in; in
C：to; to
D：to; in
答案(点此获取答案解析）
A
Shanghai lies _______ the east of China and _______ the northeast of Guangdong.
A：in; to
B：in; in
C：to; to
D：to; in
（其中0≤t≤20）给出，F（t）的单位是辆／分，t的单位是分，则在下列哪个时间段内车流量是增加的 （ ）
