Students will need ___21___ all of their language skills in order ___22___ understand the read—ing selections in Readers Choice．The book contains many types of selection on a wide varietyof topics．These selections provide practice ___23___ using different reading strategies to extractthe message of the writer．They also give students practice in four ___24___ reading skiUs：skim-ming，scanning，reading for___25___comprehension，and critical reading．

Skimming is quick reading for the general ideas of a passage.This kind of rapid reading is___26___ when you are trying to decide if careful reading is desirable or when there is not time toread something carefully．

Like skimming，___27___is also quick reading．However，in this case the search is more___28___．To scan is to read 29 in order to locate specific information，when you read to find a particulardate，or number you are scanning．

Reading for thorough comprehension is ___30___ reading in order to understand the totalmeaning of the passage． ___31___ this level of comprehension the rea(ter is able to summarize theauthor’s ideas but has not ___32___ made a critical evaluation of those ideas．

Critical reading demands that a reader ___33___ iudgments about what he or she reads．Thiskind of reading requires posting and ___34___ questions such as“Does my own experience sup—port ___35___ 0f the author?”，“Do I share the authors point of view? ”and“Am I convinced bythe authors arrangements and evidence?”

根据以上内容，回答下列各题。

1．广告正走进人们的生活。

2．广告能提供我们大量的信息。

3．然而，广告不一定都真实。

__________.

__________.

__________.

A．See you this evening

B．Ive gotta run

C．See you again

D．won’t be back for supper

E．Ill go to the office

F．Take care

G．Don’t worry

H．Ill just take the subway

Gary：Dear，I have to go to the office early today．Can you take Sally to school?Ada：Sure．Want me to give you a ride?

Gary:N0，forget it． ____56____ ．it’s very quick．Ill pick Sally up this afterrnoon．You can just come home after work．

Ada：Ok．Oh，I almost forgot．I probably 57．Ive made an evening appointment

with Mr．Steven to talk about our next project．

Gary：Oh，I see．____58____．Hurry Sally up a little．She hasnt even had her breakfast yet．Ada：Ok． ____59____．Love you，honey．

Gary：I love you，too．____60____．

根据以上内容，回答下列各题。

__________.

__________.

The application of infrared scanning technolgy to agriculture met with some difficul-ties due to_________．

Plants will emit an increased amount of heat when they are_________

Farmers can save a considerable amount of pesticide by_________．

Even plants can run a fever，especially when they’re under attack by insects or disease．But unlike humans，plants Can have their temperature taken from 3,000 feet away—straightup．A decade ago，adapting the infrared(红外线)scanning technology developed for militarypurposes and other satellites，physicist Stephen Paley came up with a quick way to take thetemperature of crops to determine which ones are under stress．The goal was to let farmers pre-cisely target pesticide(杀虫剂)spraying rather than rain poison on a whole field，which in-variably includes plants that don’t have pest(害虫)problems．

Even better．Paley’s Remote Scanning Services Company could detect crop problems be-fore they became visible to the eye．Mounted on a plane flown at 3，000 feet at night，an infra-red scanner measured the heat emitted by crops．The data were transformed into a color-codemap showing where plants were running“fevers”．Farmers could then spot-spray，using 50 to70 percent less pesticide than they otherwise would．

The bad news is that Paleys company closed down in 1984，after only three years．Farm,ers resisted the new technology and long-term backers were hard to find．But with the　renewedconcem about pesticides on produce，and refinements in infrared scanning，Paley hopes to getback into operation．Agriculture experts have no doubt the technology works．“This techniquecan be used on 75 percent of agricultural land in the United States"，says George Oerther ofTexas A&M．Ray Jackson，who recently retired from the Department of Agricuhrue，thinks re-mote infrared crop scanning could be adopted by the end of the decade．But only if Paley findsthe financial backing which he failed to obtain 10 years ago．

根据以上内容，回答下列各题。

In order to apply pesticide spraying precisely，we call use infrared scanning to _________.