单选题：Scientists are not sure how serious the effects of global wa

题目内容：

Scientists are not sure how serious the effects of global warming will be. A．Right
B．Wrong
C．Not mentioned

参考答案：

答案解析：

桥梁高程测量网的水准测量精度与桥长有关，对桥长在l000m以上的桥梁，两岸水准连测的测量精度应达到（　　）。

桥梁高程测量网的水准测量精度与桥长有关，对桥长在l000m以上的桥梁，两岸水准连测的测量精度应达到（　　）。 A．一等 B．二等 C．三等 D．四等

分类：理工类题型：单选题

There had not been such a severe storm in Trumbull County for a hundred years.A．

分类：理工类题型：单选题

涵洞是多孔跨径的全长不到（　　）和单孔跨径不到5m的结构物。 A．15m B．12m C．10m D．8m

分类：理工类题型：单选题

Human facial expressions differ from those of animals in the degree to which the

分类：理工类题型：单选题

The old lady let her flat to an English couple.A．offered B．rented C．provided D．s

分类：理工类题型：单选题