Đọc đoạn văn và chọn đáp án đúng :

Hãy đọc đoạn văn dưới đây và khoanh chữ gần từ thích hợp nhất cho mỗi khoảng trông:

When you plant a tree, you are (1)............ your environment in many ways. Your tree will (2).......... a home and food for other creatures. Birds may (3)...........nests in the branches. The flowers will provide honey for insects, and the fruits or nuts may (4)................ squirrels or other small animals. Your tree will (5)........... the soil in plance. This will help (6)............erosion (7).................. addition, your tree will provide shade in summer. This will provide welcome relief (8)........hot days. You can watch your tree (9)........, and some day (10)............... your children or even your grandchildren the tree you planted

1. A. doing B. helping C. making D. working

2. A. build B. buy C. provide D. make

3. A. build B. bring C. hold D. need

4. A. help B. feed C. eat D. get

5. A. do B. help C. give D.hold

6. A. stop B. make C. get D. need

7. A. On B. With C. In D. Of

8. A. with B. in C.at D. on

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