八级英语

One important outcome of the work on the expression of genes in developing embryos is sure to be knowledge that can help preventing birth defects. Just as promising (26)is the possibility of unravelin...

Vitamins, like minerals, are chemicals. There is absolutely not difference in the chemical structure (26)of the nature vitamin C and the chemical structure (27)of the synthetic vitamin C. Also, while ...

The telephone system is a circuit-switched network. For much of the history of the system, when you placed (26)a call, you were renting a pair of copper wires that ran continuously from your telephone...

The German poet and polymath Johann Wolfgang von Goethe pondered the question of how organisms develop in his scientific studies of form and structure immature plants and animals, a field he found and...

Literature is a means by which we know ourselves. By it we (26)meet future selves, and recognize past selves; against it we match our present self. Its primary function is to validate and re-create th...

Because the air in the country is really clean, we ought to live there much as is possible. Since, however, a great deal of the worlds (26)work must be done indoor in cities, it is important that we t...

Henry Fielding, the famous novelist who was also 26)a London magistrate, once madea night raid to two known hideouts in this city-within-a-city; he found seven men,women, and children packed away in a...

I think it is true to saying that, in general, language teachers (26)have paid little attention to the way sentences are used in combination to form stretches of disconnected discourse. They have tend...

The changes in language will continue forever, but no one knows sure (26)who does the changing. One possibility is that children are responsible. A professor of linguistic at the University of Hawaii,...

Whenever you see the old film, even on made as early (26)as ten years before, you can’t help being strucked (27)by the appearance of the woman taking part. Their hair-styles and make-up look dated; ...