شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 10221

The climbers who couldn’t manage to reach the rescue base on time .......... somewhere suitable to spend the night, but they failed and had to sleep under the sky.

Tom's professor explained the difference between science and .................... , the first one is what researchers are currently working on and the second one is what human has already found out about the world.

Vitamins are complex compounds that the body needs to function normally. The word vitamin was invented in the 1990s, but the curing value of certain foods in fighting disease was recognized about 3,000 years ago by the ancient Egyptians. They knew that night blindness could be avoided by eating liver, a source of vitamin A. In the 1700s, an Austrian doctor discovered that eating citrus fruits is enough to cure Scurvy, a disease that affects the blood. In 1795, the British Navy began to give sailors lime juice to prevent Scurvy. The Japanese Navy learned that too much white rice in the diet causes Beriberi, a painful nerve disease, and that meat and vegetables, which have thiamine (B1), prevent the disease.

In the early 1900s, as the causes of an increasing number of diseases were identified as vitamin deficiencies, vitamins were labeled with the letters of the alphabet. Researchers discovered more than twenty-six vitamins, which are now referred to by both letters and chemical names. For example, the vitamin B complex includes twelve vitamins.

Which of the following is TRUE, according to the passage?

Tom can’t go out with his friends tonight. He has to stay home and … care of his sick mother.