TCP/IP模型中，提供端到端的通信的是（）。A、应用层 B、传输层 C、互联网层 D、网

The Intergovernmental Panel on Climate Change (IPCC) was set up in 1988 to assess information on climate change and its impact. Its Third Assessment Report predicts global temperature rises by 2100 of between 1.4°C and 5.8°C. Although the issue of the changing climate is very complex and some changes are uncertain, temperature rises are expected to affect countries throughout the world and have a knock-on effect with sea-level rises.Scientists have argued about whether temperature rises are due to human activities or due to natural changes in our environment. The IPCC announced in 2001 that "most of the warming observed over the last 50 years is likely to be attributable to human activities". This was a more forceful statement than in 1996 when the Second Assessment Report stated that there was a "discernible human influence on the climate" which was the first time they had concluded such a link. Many experts believe the faster the climate changes, the greater the risk will be.Key points of the projections for climate change globally include that by the second half of the 21st century, wintertime rainfall in the northern mid to high latitudes and Antarctica will rise, that meanwhile Australia, Central America and southern Africa are likely to see decreases in autumn precipitation, that some land areas in the tropics will see more rainfall, and that there will generally be more hot days over land areas.

According to the author, climate researchers________.

A．are quite sure about why it’s getting hotter and hotter

B．declared that we humans are the cause why it’s getting hotter

C．have discussed the possible causes why it’s hotter

D．have claimed that changes in nature are the roots of hot days

胁痛的基本病机为（）。

A.气滞血瘀

B.肝郁气滞

C.湿热内蕴

D.肝络失和

E.以上都不是

患者女，带下量多，色白质黏，呈豆渣样，外阴瘙痒，入夜尤甚；脘闷纳差，舌红苔黄腻，脉滑数。

此例宜选用哪项辅助检查以明确诊断（）

A.B超

B.血常规

C. * * 分泌物涂片

D.卵巢功能测定

E. * * 组织活检

受入境检疫的船舶，必须按规定悬挂检疫信号等候查验。( )

关于位移和路程，下列说法中正确的是：（）

A.位移的大小可以大于路程

B.位移的大小只能小于路程

C.位移是矢量，描述质点位置的变化；路程是标量，描述质点的运动轨迹长度

D.位移的大小可能大于路程