“ A heavy weight of hours has chained and bowed／ One too like thee: tamelss, and swift, and proud.” This is from________.

A.obtain

B.surround

C.sustain

D.surrender

A.weight

B. weigh

C. heaviness

D. heavy

A．as many as

B．as large as

C．as heavy as

D．as more as

A．be pooped

B．pitchpole

C．broach

D．squat

A、He's big.

B、Medium, maybe a bit on the heavy side.

C、He's tall.

ll stem to weight the bit in order to improve its performance is called a ______.

A.heavy-walled drill pipe

B.tool joint

C.down hole tool

D.drill collar

a list ________．

A.Empty double-bottoms and lower holds，and a heavy deck cargo

B.Flooding the forepeak to correct the vessel's trim

C.Having KG smaller than KM

D.Having a small positive righting arm

d Practicability” to put forth the ideas that postal rates should not be based on the distance that a letter or package travels but should instead be based on the weight of the letter or package and that fees for postal services should be collected in advance of the delivery, rather than after, through the use of postage stamps.

It is indicated in this paragraph that Sir Rowland Hill believed that postage fees _____.

A、should be paid by the sender

B、should be related to distance

C、should be collected after the package is delivered

D、should have nothing to do with how heavy a package is

an object, but it is not really fixed at all. If you could take a one pound packet of butter 4,000 miles out from the earth, it would weigh only a quarter of a pound.

Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space？ The reason is this: All objects have a natural attraction for all other objects; this is called gravitational attraction, but this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4,000 miles from the center (in other words the radius[半径] of the earth is 4,000 miles). When we took the butter 4,000 miles out, it was 8,000 miles from the center, which is twice the distance.

If you double the distance between two objects, their gravitational attraction decreases (减少) two times two. If you treble (成三倍) the distance, it gets nine times weaker (three times three). If you take it four times as far away, it gets sixteen times weaker (four times four ) and so on.

The best title for this passage is______.

A．The Earth Weight

B．Weight in Space

C．Changing Weight on the Earth

D．Weight on and off the Earth

D

This is not a diet (减肥食谱) or a hard ~exercise program. Nobody can stick to those for long. Instead, it's a simple way to make weight loss a natural part of the life you already live. And guess what？ It's fun! You don't have to give up the foods you love or do regular exercises. It's about balancing calories(平衡卡路里) in tiny ways that add up to big benefits (好处). You just use some tricks the "naturally thin" people do. Pick the ones you like, stick with them, and you'll lose weight and be strong!

Talk it UP Every time you pick Up the phone, stand up and walk around. Heavy people sit on average two and h half hours more every day than thin people, according to astudy.

Get face time We use e-mailso much that we've forgotten what our colleagues look like.

Pick a colleague or two who sit farthest from you: and deliver 10 of those daily messages in person. And go out of your way: go to a bathroom ora copy machine on another floor and take the stairs, of course.

Think about your drink Consider beer or wine instead of a frozen drink: A glass of regular beer has 140 calories and a serving of wine has 126 calories, while a strawberry daiquiri has about 300 and a margarita 340.

Reduce a total of 100 calories each day and you'll be able to lose about 10 pounds in a year. This is really not difficult to do.

47. What is mainly talked about in the passage？

A. How to do exercises daily.

B. How to lose weight easily.

C. How to work comfortably.

D: How to eat and drink regularly.