涎腺炎主要的感染途径是A．逆行性感染 B．血源性感染 C．淋巴源性感染 D．临近组织

下列泌尿、男生殖系统感染中，哪些是可能要手术治疗的（）

A.急性肾盂肾炎

B.肾积脓

C.肾皮质多发性脓肿

D.肾周围炎

E.急性细菌性膀胱炎

- Have you seen the New Year's film Personal TaiTor _______ by Feng Xiaogang?

- Yes. It was pictured in Suzhou, and it is well worth _______.

A．directing; seeing

B．directed; to be seen

C．directed; seeing

D．directed; being seen

— Turn off the TV, Jack, _____ your homework now? 

— Mum, just ten more minutes, please. [ ]

A. Should you be doing

B. Shouldn't you be doing

C. Couldn't you be doing

D. Will you be doing

肘屈伸作业可选用（）

A.调和黏土

B.拧龙头

C.编织

D.上下楼

E.排球

执行下列语句，变量sum的值是______。
int sum=0；
for(inti=1;i＜=3；i++)
for(intj=1；j＜=i；j++) sum++；