题目内容
Travelling can be fun and easy. A vacation trip to another country is especially __1_ when the travelling conditions are good. Good travelling conditions _2_ a comfortable way of transportation, knowledge of the country’s ___3__, familiarity __4_ the custom and habits of the people in the country, and pleasant travelling __5_. If we have a nice trip __6_ this, it will be an unforgettable experience.
__7__, most of us may also have trips that we would __8_ to forget. Many conditions can produce a bad __9_ experience. For example, if the four conditions __10_ above do not exist in our trip, we will probably have a bad experience, __11_ at least a difficult __12_. Students who travel to a __13_ country to study often have a difficult trip. They usually travel __14_, and not knowing the language of the new country __15_ their difficulties. They often arrive in the new country __16_ an international airport. From the airport, they need to __17_ their way to their school. Maybe they need to change airplanes, to ___18__ a bus, a train, or a taxi. They need to do all this in a country__19_ everything is unfamiliar. Maybe after they reach their schools, they forget the trip soon, but at that __20_, they feel terrible.
1.A.happy B.enjoyable C.amusing D.favorable
2.A.include B.conclude C.hold D.contain
3.A.words B.speech C.language D.address
4.A.to B.for C.of D.with
5.A.companions B.friends C.students D.fellow
6.A.with B.as C.like D.of
7.A.However B.yet C.Therefore D.but
8.A.have B.think C.wish D.need
9.A.tripping B.traveling C.passing D.visiting
10.A.told B.numbered C.appeared D.listed
11.A.or B.and C.but D.so
12.A.matter B.one C.thing D.practice
13.A.different B.another C.foreign D.other
14.A.separated B.lonely C.alone D.single
15.A.adds to B.adds up C.adds up to D.adds in
16.A.at B.to C.on D.from
17.A.watch B.see C.notice D.find
18.A.get B.go C.board D.take
19.A.where B.that C.when D.which
20.A.date B.time C.while D.day
1-5 BACDA 6~10 CACBD 11~15 ABCCA 16~20 ADDAB
Before going outside in the morning, many of us check a window thermometer(温度计)for the temperature. This helps us decide what to wear. _____76____. We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don’t feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.
Not all the thermometers use the same system to measure temperature. We use a system called the Fahrenheit scale. But most other countries use the Centigrade scale.
Both systems use the freezing and boiling points of water as their guide._____77_____ .
The most common kind of thermometer is made with mercury(水银)inside a clear glass tube. As mercury (or any other liquid ) becomes hot, it expands. As it gets colder, it contracts(收缩). That is why on hot days the mercury line is high in the glass tube._____78______.
First. Take a clear glass juice bottle that has a cap ; fill the bottle with coloured water. Tap a hole in the center of the cap using a hammer and thick nail. Put the cap on the jar. Then stick a plastic straw(吸管) through the nail hole.
______79______.
Finally. Place a white card on the outside of the bottle and behind the straw. Now you can see the water lever easily.
______80____.
As the temperature goes down, the water will contract, and the lever in the straw will come down. Perhaps you will want to keep a record of the water lever in the straw each morning for a week.
A.We use and depend on thermometers to measure the temperature of many other things in our daily lives. |
B.Thermometers measure temperature, by using materials that change in the same way when they are heated or cooled. |
C.Now that you know this rule you can make a thermometer of your own that will work. |
D.The water will rise in the straw. As the temperature of the air goes up, the water will |
expand and rise even higher.
E.They label these in different ways. On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees. On the Celsius scale water freezes at 0 degrees and boils at 100degrees.
F.Take wax (you may use an old candle if you have one) and melt some of it right where the straw is struck into the cap to seal把..粘住) them together.
G.People use thermometers which are made by themselves when travelling around the
world.