布尔津县夏天蚊子特别多，被蚊子叮咬后人会感觉痛痒，这是由于蚊子分泌出的酸性物质有

The last thirty years _________ the quick development in almost every field in China.

A．saw

B．had seen

C．have seen

D．would see

已定义以下函数：　　fun(char *p2, char *p1)　　{　while((*p2=*p1)!=''\0''){ p1++;p2++; }　}　　此函数的功能是（ ）。

A．将p1所指字符串复制到p2所指内存空间

B．将p1所指字符串的地址赋给指针p2

C．对p1和p2两个指针所指字符串进行比较

D．检查p1和p2两个指针所指字符串中是否有'\0'

Green economy offers a new model ________ people could both protect the climate and develop the economy, according to what Li said at the International Cooperative Conference on Green Economy and Climate Change.

A．how

B．why

C．where

D．which

气性坏疽的早期诊断依据是（）

A.受伤史和临床所见

B.血培养培养出革兰氏阳性杆菌

C.渗出物涂片找到革兰氏阳性杆菌

D.严重的败血症和溶血性贫血

E.伤口部位培养出厌氧性梭状芽孢杆菌