题目内容

In his book,he explains both it means to be a scientist and science works.

A.
how; how
B.
what; that
C.
what; how
D.
how; that

C
考查名词性从句。句意：在他的书里，他即解释了科学家的意义又说明了科学是如何的运作的。前空为意味作----，what的含义；后空work为不及物动词，故用how.

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A blind baby is doubly handicapped. Not only is it unable to see, but because it cannot receive the visual stimulus（刺激）from its environment that a sighted child does, it is likely to be slow in intellectual development. Now the ten-month old son of Dr. and Mrs. Dennis Daughters is the subject of an unusual psychological experiment designed to prevent a lag（滞后）in the learning process. With the aid of a sonar-type electronic that he wears on his head, infant(婴儿) Dennis is learning to identify the people and objects in the world around him by means of echoes(回声).

The device is an improvement of the “Sonicguide”, an instrument produced by Telesensory Systems, Inc., of Palo Alto, Calif, and used by blind adults in addition to a smart or guide dog. As adapted for Dennis, it consists of a battery-powered system about the size of a half dollar that is on a headgear. A transmitter sends out an ultrasonic(超声的) pulse that creates an 80 degree cone of sound at 6 feet. Echoes from objects within the cone are perceived (felt) as sounds that vary in pitch(音调) and volume(音量) with the size and distance of the object.

The closer an object is, the lower the pitch, and the larger the object, the louder the signal. Hard surfaces produce a sharp ping, while soft ones send back signals with a slightly fuzzy quality. An object slightly to the right of Denny’s sends back a louder sound to his right ear than to the left. Thus , by simply moving his head right and left and up and down, he can not only locate an object but also get some notion of its shape and size, thanks to the varying qualities of sounds reaching his ears as the cone of ultrasound(超声波) passes its edges. Dennis likes to use the device to play a kind of peek-a-boo with his mother. Standing on her knee and facing her directly, he receives a strong signal in both ears. By turning his head away, he makes her seem to disappear. “From the first time he wore it,” says Mrs. Daughters, “it was like a light going on in his head.”

What remains to be determined is how well the device will help Dennis cope with his surroundings as he begins to walk and venture further into his environment.

Meanwhile, Telesensory, Inc, is working on the development of sonar(声纳) device with somewhat the same sensitivity as Dennis’s for use by school-age children.

66. Dr. and Mrs. Daughters’ research is directed to ______________.

A. helping the blind to see and learn as well as others

B. benefiting the learning process of blind children

C. solving blind children’s psychological problems

D. finding out how children develop intellectually

67. Infant Dennis becomes the subject of the experiment most probably because _____________.

A. he already lags behind the sighted children B. he leads a life as normal as any other children

C. he is at the early stage of the learning process D. he has the aid of a sonar-type electronic device

68. What can we learn about infant Dennis’ device?

A. Its the first design was designed for blind adults. B. Its battery is as small as a half-dollar coin.

C. It is functionally similar to a sane and guide dog. D. It has been improved by Telesensory Systems, Inc.

69. In the third paragraph, “its edge” refers to ___________ .

A. the edge of an object B. the edge of the device

C. the boundary of Dennis’ movement D. the boundary of the sound pitch.

70. What is Telesensory Systems, Inc. most likely to think about infant Dennis’ device?

A. It had better be used by blind children from school age.

B. It needs improving for use in a complicated environment.

C. It may not be so suitable for the blind adults.

D. It benefits blind children in terms of learning.

Attention Tim Hortons

Stainless Steel Travel Mug Owners

Lid Recall--15 oz Stainless Steel Travel Mug

A fault at the cup has been recognized．The fault may result in some lids lifting slightly from the body of the mug，and could probably cause injury from hot liquid leaking．Therefore，we have given an immediate lid recall notice．This recall notice is related only to Tim Hortons15 oz stainless Steel Travel Mugs sold between October 2005 and January 2006．The boo tom of the mug is stamped with distributor's（经销商）name，Thermo Serv. There is no printing on the handle of the mug．

At Tim Hortons，we value out customers’ safely above anything else．So, whether your lid is leaking or not，in the interest of your safety, we are requesting that you bring your mug to your nearest Tim Hortons（excluding Esso Tim Hortons）．where they will exchange the lid for a new lid that fits safely．The new lids will be available February l，2006．

Please do not use your mug until you exchange the lid．

Here’s what you do：

●Please do not use your mug until you have exchanged the lid for a new one．

● New lids will be available February 2,2006．

● Return your travel mug to a Tim Hortons store．

● Your lid will be exchanged for a new lid．

If you prefer to return the entire mug，bring it back at any time for a full repayment．

If you have any questions regarding his

recall，please contact us at：

Toll Free Number：l—888—508一77l7

8：30 a.m.~5：00 p.m. Eastern Standard Time

Tim Hortons

1．This advertisement is trying to ．

A．introduce a new type of mugs

B．persuade people to buy a new steel mug lid

C．inform people of exchanging a lid

D．warn against the danger of using the faulty mug

2．The advertisement is mainly aimed at those who ．

A．often travel around

B．have 15 oz Stainless mugs

C．want to buy 1 5 oz Stainless mugs

D．are selling the Tim Hortons mugs

3．Your lid will be exchanged for a new one ．

A．if the distributor’s name is on the handle of the mug

B．if you go to the nearest Esso Tim Hortons

C．if you bought the mug in February 2006

D．if your lid is not leaking

4．According to the advertisement, which of the following statements is NOT true?

A．People should stop using the Tim Hortons15 oz stainless steel travel mug immediately．

B．People can return the lid between October 2005 and January 2006．

C．People can get the money back if they return the faulty mug．

D．Tim Hortons does its duty to care about the customers’ safety．

In his book,he explains both ______ it means to be a scientist and ______ science works.

试题分类

In his book,he explains both it means to be a scientist and science works.