Hailey’s comet was named after the astronomer Edmund Hailey, who was the first to realize that some comets appear in regular cycle

Câu hỏi liên quan

• It was suggested that Pedro studies the material more thoroughly before attempting to pass the exam

• The most common form of treatment it is mass inoculation and chlorination of water sources

• Research has proved that a baby can distinguish its mother’s voice the moment he is born.

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• It is believed that the more frequent you exercise, the greater physical endurance you will have

• To the men who  worked so hard on the project, the news was profound disappointing.

• Many roads and railroads were built in the 1880s because of the industrial cities needed a network to link them with sources of supply.

• You had better come yourself_______ send a friend.

   

• We need wither a nail_______ a screw to hang this picture.

• We took lots of photos. We videoed the speeches_______

• When I came back, I realized that my camera had been disappeared.

• He took the food eagerly, _______ he had eaten nothing since dawn.

• He felt ill_______ he went to bed early.

   

• Olivia booked a babysitter_______ she could go out for the evening.

• Many of the population in the rural areas is composed of manual workers.

• You can send letters from Hongkong_______ by Suez or by Canada.

   

• Runner Wilma Rudolf win three gold medals at the 1960 Olympics, and she set the world record for the 100 – meter dash in 1961

• You can come here either on Monday__________ on Friday.

• Bill was about average in performance in comparison with other students in his class

• Since the Great Depression of the 1930’s, social programs such as Social Security have been built into the economy to help avert severity business declines.

• Of all outdoor activities, Paul likes fishing best of all, but he doesn’t enjoy cleaning the fishing rods afterwards.