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11 The children weren't looked after properly
12 He isn't loved
13 Tea is grown in Thai Nguyen
14 English is spoken all over the world
15 2 Poems were being written by Tom
16 Her homework is often done in the evening
17 A new car can be bought by her next week
18 Milk cows is usually used by farmers twice a day
19 He likes being called sir
20 We used to be told stories by our teacher
81. Jack had a stomachache because he ate a lot of candies last night
82. What an expensive car she has!
83. Could you tell me the way to the nearest drugstore?
84. Vietnamese students take part in different activities at recess
85. My son never goes to the dentist so his teeth are bad
86. It often takes me ten minutes to go home from the post office on foot
87. You should eat a variety of food without eating too much anything
88. These towers are 250 m high
89. How much does it cost to mail a letter to America?
90. His father is a doctor in the biggest hospital in the city
2)
a. unhappy
b. cleaner
c. different
d. brushing
e. pleasure
f. skillful
g. eighth
h. badly
I. meeting
1. The song made her feel homesick.
2. Our work makes us have no time to spare.
3. Everybody is fond of spring because the weather is ideal.
`\text{Câu 12: Em hãy cho biết đồng chí Võ Văn Kiệt bị mật thám Pháp bắt giam do tham gia dẫn đầu đoàn biểu tình chống Pháp vào ngày, tháng, năm nào?}`
`\text{A. 14/7/1939}`
`\text{B. 14/7/1940}`
`\text{C. 14/7/1941}`
`\text{D. 14/7/1942}`
Ta có: D là trung điểm AB
E là trung điểm AC
\(\Rightarrow\) DE là đường trung bình \(\Delta ABC\).
\(\Rightarrow DE=\dfrac{1}{2}BC\Leftrightarrow BC=2DE=2.50=100m\)
Xét ΔABC và ΔABC có :
D là trung điểm AB
E là trung điểm AC
=> DE là đường trung bình của ΔABC
⇒ DE = \(\dfrac{1}{2}\)BC hay BC = 2DE.
Mà DE = 50m nên BC = 2.50 = 100m.
Vậy khoảng cách giữa hai điểm B và C là 100m.
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