单选题3. His grandpa always ______ back to the suffering of the cultural revolution.

单选题. Even the newest gardener realizes that plants die without water. What is not so well known is that plants die equally decisively, though not so quickly, if they are overwatered. Beginners usually decide to play it safe and keep their potted (盆栽的) plants thoroughly wet. In consequence, death by drowning is one of the commonest disasters to befall (降临) the plants of a new horticulturist. Overwatered plants, unfortunately, do not give any such obvious signal. Unless the overwatered pot soil is given a considerable period without water, it will suddenly collapse in exactly the same way as the underwatered plant.1. From the text we can infer that a horticulturist is a person engaged in ______.

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单选题11. We are confident that we will get rid of those difficulties since the government has agreed to give us some help.

单选题 If that's the case

单选题 ______ rich people are

单选题. If you are looking for a place that has everything, there's only one place to visit, and that's New York. It's a whole world in a city. The World of Theater: All of New York is a stage. And it begins with Broadway. Where else can you find so many hits shows in one place? Only in New York! The World of Music: Spend an evening with Beethoven at Lincoln Center. Swing to the great Jazz of Greenwich Village. Or rock yourself silly at the hottest dance spots found everywhere. The World of Arts: From Rembrandt to Picasso. From Egyptian tombs to Italian teepees (圆锥形帐篷). Whatever kind of art you like, you'll find it in New York. The World of Fine Dining: Whether it's roast Beijing duck in Chinatown, lasagna in Little Italy, or the finest French coq au vin found anywhere, there is a world of great taste waiting for you in New York. The World of Sights: What other city has a Statue of Liberty? A Rockefeller Center? Or a Bronx Zoo? Where else can you take a horse-drawn carriage through Central Park, only in New York!1. From the text we know that "Rembrandt" is most likely to be a famous ______.

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单选题《复合题被拆开情况》《问题》：Thepurposeoftheposteristo________.

单选题 As an international company

单选题______my job easy, but also have made it a real pleasure to do this job.

单选题1. In Britain the ______ on a letter is now twelve pence.

单选题.1.

单选题 I didn't go to the party

单选题 ______ yesterday

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单选题I didn’t go with them to the beach yesterday. But I do wish I________there.

单选题It’s not clear exactly when we can expect to see our streets full________driverless vehicles.

单选题. Do you want to know something about the history of weather? Don't look at the sky. Don't look for old weather reports. Looking at tree rings is more important. Correct weather reports date back only one century, but some trees can provide an exact record of the weather even further back. It is natural that a tree would grow best in a climate with plenty of sunlight and rainfall. It is also expected that little sunlight or rainfall would limit the growth of a tree. The change from a favorable to an unfavorable climate can be determined by reading the pattern of rings in a tree trunk. To find out the weather of ten years ago, count the rings of a tree trunk from the outside to the inside. If the tenth ring is far from the other rings, then it is certain that plenty of sunny and rainy weather occurred. If the rings are close together, then the climate was bad for the tree. Studying tree rings is important not only for the history of weather, but also for the history of man. In a region of New Mexico you' can find only sand-no trees and to people. However, many centuries ago a large population lived there. They left suddenly. Why? A scientist studied patterns of dead rings which had grown there. He thought that the people had to leave because they had cut down all the trees. Trees were necessary to make fires and buildings. So, after the people destroyed the trees, they had to move. In this instance, studying tree rings uncovered an exciting fact about the history of man.1. It is understood that in a favorable climate ______ .