根据视图绘制出的轴测图是正确的。 The pictorial drawing fits with the three views.

The four-stroke cycle begins with the piston( ) from the top of its stroke.

A.moving down

B.coming up

C.arise

“The use of a poor quality oil can lead to rapid deterioration of its properties with the resultant formation of deposits in the piston crown which in turn results in a considerable reduction in heat transfer with subsequent overheating and thermal cracking.” According to this sentence, we can know that the principle reason of the overheating and thermal cracking is .

A.the use of a poor quality oil

B.the deterioration of its properties

C.the formation of deposits

D.the reduction in heat transfer ability

Which of the Giant's Causeway's features best fits with the criteria set in the World Heritage Convention?

A．Its unparalleled display of geological formations.

B．Its amphitheatres with fancily named stone columns.

C．Its largest remaining lava plateau in Europe.

D．Its swinging rope bridge between the coast and a little isle.

【C7】

A．fits with

B．starts with

C．steps in

D．brings in

根据以下材料回答第 1～4 题：

Passage Three

Only one animal can walk 200 miles without stopping once to rest．It would take a person two days and two nights to walk this far，and only one man has ever done it with—out stopping．What amazing animal has such endurance?The camel!The camel is well known for something else，too．It can cross an entire desert without a single drink of wa-ter．Its body is built in a special way to help it store water and food．

A person has j ust one somach，but a camel has quiter a few．Within each stomach are layers and layers of cells．These ceils are like tiny water balloons，storing liquids until the camel needs them．When the camel drinks。the cells grow larger and larger．For a whole week，they can keep the animal’s thirst away by sending water to all parts of its body．

And did you ever wonder why the camel has a hump?The hump is a storage place for fat Because it has this storage area．the camel does not need to eat very ofterL When the animal needs energy，the layers of fat serve as fuel to keep it going on the long，hot days in the burning SLID．

The camel has one other gift that makes it well suited to arid regions．This gift it’s amazing nose．A camel can smell a water hole from miles away!

，Wllen a camel moves it sways from side to side like a ship on a wavy ocean．Because of this swaying motion，the camel has been called the“shjp of the Desert．”

第 44 题 The camel `s hump is a storage place for ．

What does the passage mainly talk about?

A．The benefit of sharing networks with other users.

B．The best way to protect one"s privacy on shared networks.

C．Should you share your Wi-Fi connection with others?

D．Why do home users need legal protection against liability?