Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Birds have evolved many physical attributes that contribute to their flying ability. Wings are important, but adjustable tails, large hearts and light bones play critical roles.
To fly, birds, like airplanes, move air across their wings. Wings are designed so that air above the wings is forced to move faster than air below the wing. This creates higher pressure under the wings, called lift, which pushes the bird up. Different wing types evolved for different ways of flying. Prolonged flight requires long wings and an ability to soar. Other birds need superior maneuverability. Finches and sparrows
have short, broad wings. Faster birds, like hawks, have built-in spoilers that reduce turbulence while flying. This allows a steeper angle of attack without stalling.
Tails have evolved for specialized use. The tail acts like a rudder helping birds steer. Birds brake by spreading out their tails as they land. This adaptation allows them to make sudden, controlled stops-an essential skill, since most birds need to land on individual branches or on prey.
Flight takes muscle strength. If body builders has wings, they still could not flap hard enough to leave the ground. Birds have large, specialized hearts that beat much faster than the human heart and provide the necessary oxygen to the muscles. The breast muscle accounts for 15 percent of the bird’s body weight. On pigeons, it accounts for a third of their total body weight.
Birds carry no excess baggage; they have hollow feathers and hollow bones with struts inside to maintain strength, like cross beams in a bridge. Birds fly to find prey, escape predators, and attract mates-in other words, to survive
What is the main idea of the passage?
A. Wings are the most important physical attribute of birds
B. Different wing styles evolved for different types of flight
C. Birds have many specialized features that aid in their survival
D. Birds fly for many reasons
Giải bởi qa.haylamdo.com
Chọn C
Kiến thức: Đọc hiểu
Giải thích:
Ý chính của bài đọc là gì?
A. Cánh là thuộc tính vật lý quan trọng nhất của loài chim.
B. Các kiểu cánh khác nhau phát triển các kiểu bay khác nhau.
C. Loài chim có nhiều đặc điểm chuyên biệt hỗ trợ sự sống của chúng.
D. Loài chim bay vì nhiều lý do
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
The United Nations Children’s Fund (UNICEF), originally known (26)______the United Nations International Children’s Emergency Fund, was created by the United Nations General Assembly on December 11th , 1946 to provide emergency food and healthcare to children and mothers in countries that had been devastated by World War II. The Polish physician Ludwik Rajchman is widely regarded as the (27)______of UNICEF and served as its first chairman from 1946 to 1950, when he had to flee the United States in the wake of McCarthyism. Rajchman is to this day the only person that served as UNICEF’s Chairman for longer than 2 years. On Rajchman’s suggestion, the American Maurice Pate was appointed its first executive director, serving from 1947 until his death in 1965. In 1950, UNICEF’s mandate was extended to address the long-term needs of children and women in developing countries everywhere. In 1953, it (28)______a permanent part of the United Nations System, and the words "international" and "emergency" were dropped from the organization's name, though it retained the original acronym, "UNICEF".
UNICEF (29)______ on contributions from governments and private donors. UNICEF’s total income for 2015 was more than five billion dollars. Governments contribute two-thirds of the organization’s resources. Private groups and individuals contribute the rest through national committees. It is estimated that 92 per cent of UNICEF revenue is distributed to program services. UNICEF’s programs emphasize developing community-level services to (30)______ the health and well-being of children. UNICEF was awarded the Nobel Peace Prize in 1965 and the Prince of Asturias Award of Concord in 2006
Điền ô 30
A golden handshake may have a _______ effect when one is dealt with the blow of redundancy
Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions
The first time I met my friend’s parents, I was walking on eggshells because I knew their political views were very different from mine
I could tell from the_______look on his face that something strange _________
It’s almost nine months since I stopped subscribing to that magazine
Recycling and disposal of wastes require sizable expenditure. In such situations, industries preferred to export their wastes to other countries
The widely-publicized demonstration did not after all__________.
I hope the soft skills course starts this term. We are all as keen as _______ to get going
Dick is thanking Michelle for giving him the gift on his birthday.
Dick: "Thanks for the nice gift you brought to me!” - Michelle: “_________”
It was only after 1815 that a distinctive American literature began to appear with writers as Washington Irving and James Fenimore Cooper
Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions
His lawyer thought Jack had a good chance of being acquitted at the trial, if no further evidence was found
Linda is the more capable of the two girls who has tried out for the part in the play
Albert Einstein is lauded as one of the greatest theoretical physicists of all time
There is an important difference between chimpanzees and humans. Humans walk on two legs
