Sizewise,the new HOV will be similar to Alvin。Itll be about 37 feel,long.The setting area inside will be a small sphere,about 8 feet wide,like Alvin,itll carry a pilot and two passengers.It will be just as maneuverable.In most other ways,it will give passengers more opportunities to enjoy the view,for one thin9。Alvin has only three windows,the new vehicle will have five,with more overlap so that the passengers and the pilot.can see the sarab thing.
Alvin can go up and down at a rate of 30 meters every second,and its maximum speed is 2 knots,while the new vehicle will be able to ascend and descend at 44 meters per second.Itll reach speeds of 3 knots,or 3.5 miles per hour.
词汇:
manned adj.载人的 sphere n.球体;范围
undersea adj.海底的 maneuverable adj.机动的,可调动的
submersible n.潜艇;潜水器 overlap v.n.重叠
1.What is Alvin?
A.A research institute.
B.A transporting vehicle.
C.A submersible.
D.A scientist.
2.Which of the following statements is NOT a fact about Alvin?
A.It can carry explorers as deep as 6,500 meters.
B.It has played a key role in various important undersea expeditions
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