Which of the following helped lead to conclusions about whether Stone Age, people preferred one hand to the other?
Giải bởi qa.haylamdo.com
Điều nào sau đây giúp dẫn đến kết luận về việc mọi người trong thời đồ đá thích dùng một tay hơn tay kia?
A. Các dạng thực vật hóa đá
B. Mô hình đẽo bào đá
C. Chất thải hóa thạch
D. Dấu chân hóa thạch
Đáp án: B
Giải thích: “Stone Age hand axes and hatchets were made from stones that were carefully chipped away to form sharp cutting edges. In some, the pattern of chipping shows that these tools and weapons were made by right handed people designed to fit comfortably into a right hand. Other Stone Age implements were made by or for lefthanders”: Rìu tay và rìu nhỏ thời kỳ đồ đá được làm từ đá được bào cẩn thận để tạo thành các cạnh cắt sắc nét. Trong một sô thứ, kiểu đẽo bào cho thấy những công cụ và vũ khí này được tạo ra bởi những người thuận tay phải, được thiết kế để phù hợp thoải mái với một bàn tay phải. Các dụng cụ thời đồ đá khác được thực hiện bởi hoặc cho người thuận tay trái.
Read the following passage and mark the letter A, B, C, or D to choose the word or phrase that best fits each of the numbered blanks from 25 to 29
GREEN ENERGY
Fossil fuels are used to generate the majority of the world's energy, and they come in different forms. For example, coal may be burned in a power (25) _____________ to generate electricity, but gasoline is burned in a car's engine to make it run. Neither of these two sources is considered green energy because they produce a lot of pollution when they are burned. In addition, they come from a source that is inevitably going to (26) _____________
Green energy can be defined as any energy source that is to some degree nonpolluting. When it is called (27) _____________, this means that a person can replace the same amount of energy that was consumed by that person (28) _____________ that person's lifetime. Since it look millions and millions of years to create the fossil fuels that we now burn, we know that they cannot be replaced by us.
Wind power and solar power, (29) _____________ harnessed properly, are two excellent sources of green energy. Once the necessary parts such as wind turbines to generate wind power and solar panels to create solar power have been produced, only the pollution from the production is left.
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 35 to 42
THE GREAT DEBATE OVER GM FOODS
One of the hottest topics in agriculture today is genetically modified (GM) foods. GM foods are foods that come from plants that have had their DNA altered using biotechnology. GM foods have been on the market since 1994, when a company called Calgene started selling GM tomatoes. Since then, other GM foods including papaya, corn, and plums to name a few have been developed.
The main benefit of GM foods is that they can be a more economical solution than non-GM foods. Scientists found a way to modify many plants to make them more resistant to weeds, diseases, and pests. This allows the plants to grow in tougher climates and conditions, which should lead to lower food prices and increase the overall food supply
However, many consumers still have their doubts about GM foods. For one they feel that by eating GM foods people are messing with nature. Until now humans have survived on food that was produced without any interference from science. Even though many lab studies show that GM foods are safe in the short term, opponents feel that not enough long-term testing has been done yet.
Another major issue in the GM foods debate is its labelling. Current US laws do not require producers to label their foods as GM. This has upset many consumers who feel they have the right to clearly know how the food they are buying is produced. On the other hand, producers are afraid to label their foods as GM because they feel it will result in less product sales, as people may assume that there is something wrong with GM foods.
This controversy is not just on the level of consumers and producers. The issue of non-GM foods has also become a block to a major free trade agreement between the US and Europe. GM foods are banned throughout most of Europe, while they are quite common throughout the US. Since many American GM food producers would like to sell their foods overseas in Europe, the US is requesting that European nations eliminate laws banning GM foods. However, many European nations are not fully convinced that these products are safe.
What did Calgene do?
She _____________ with her brother when he broke her favorite toy.
Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
Domestic cats enjoy playing and sitting in the sun. Cats in the wild like doing so.
Before you sign the contract, _____________ in mind that you won't be able to change anything later.
The phrase “messing with” in paragraph 3 is closest in meaning to _____________
She doesn't say very much. It is very difficult to a conversation with her.
My mother often _____________ our mistakes, whereas my father is very strict and punishes us for even the slightest one.
Even though she looks very young, she is twice older than my thirty-year-old sister.
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three tin the pronunciation in each of the following questions.
We planned everything carefully, but unfortunately the holiday didn't meet our_____________
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
We all felt cold, wet and hungry; _____________ , we were lost.
Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.
