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请问这个插空题怎么做,希望有人告诉做插空题的注意事项,因为PP插空好少啊,真实考试却有7-8题
The following sentence can be added
to paragraph 1.
Another benefit to farmers is
that their exposure to chemicals
in the fields where they work is
reduced, and thus their health is
protected.
Where would it best fit in the
passage?
( )An increasing number of people are advocating
a switch from chemical pesticides to a more organic
approach to raising and protecting the world's food
supply. ( ) By using predator insects such as ladybugs,
praying mantises, and wasps, farmers can reduce the
amount of chemicals they release into the environment.( )
Crop rotation has been used to control pests by
changing their food supply on a regular basis. ( )
Intercropping, or mixing different crops together in the
same fields, also helps control pest populations by
creating different environments that will not allow large
numbers of problem plants and animals to become
established. ( ) Another pest management technique,
called integrated pest management (IPM), is being
promoted as an alternative to chemical pest control. ( )
IPM is a management strategy rather than an attempt
to eliminate problem-causing plants and animals. ( )
Instead of trying to kill all the pests that cause
problems, an IPM approach attempts to keep
their populations below the level where they cause
negative economic or health effects.( ) Although IPM
incorporates the use of some pesticides, its primary
control measures are nonchemical.( )
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