References can prevent _________ and be a proof of the researchers’ work.

A、Brobdingnag

B、Lilliput

C、Houyhnhnm land

D、Laputa/Flying Island

A. budget

B. plan

C. risk

D. contract

So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at.

Vegetable gardening is the relaxing art and science of turning a love for growing plants into a meaningful activity. Having vegetables in the backyard makes home gardening appealing for many people. In addition, vegetable gardening provides exercise and fun for both urban and suburban families.

Vegetable gardeners agree that many home-grown vegetables are superior to those purchased from markets. From spring through late fall, a well-planned and well-kept garden can provide a supply of fresh vegetables, thus increasing the nutrition of the family diet.

Freezers make it possible to keep some of the vegetables to be enjoyed at a later date. Other vegetables can be stored for a few months in a cool area.

Although the money spent for a garden may be little, one cannot escape the fact that gardening requires hard work and time. Many of the gardening tasks must be performed at times that are most inconvenient. Not doing jobs that should be done on a regular basis may result in failure and a negative feeling toward gardening.

One should not plant a garden that is too large for him to care for. A small, well-kept garden is more enjoyable and profitable than a large neglected one. Vegetables do well in full sunlight and need at least five or six hours of sun during the middle of the day. Too much shading results in poor plants and few vegetables. If possible, the garden should be near the house, so the gardener can work in it whenever they are free.

Soils for vegetables should be easily broken up and porous (多孔的) for quick water drainage and good aeration(透气). Usually the home owner has little choice in the type he can choose.

Fortunately, many vegetables can be grown on poor soils if the soils are properly prepared.

Many people find home gardening______.

A．expensive and boring

B．interesting and enjoyable

C．time consuming and inconvenient

D．neither interesting nor enjoyable

A、paraphrase is almost as long as the original source with different words.

B、A summary should be as short as a sentence.

C、Paraphrase and summary are commonly used in scientific texts.

D、A quotation is an exact copy of the original source.

A、A prophase.

B、A summary.

C、A quotation.

D、A conclusion.