sơ đồ sai ở chỗ là không có "cụm phó từ"

cách sửa là bỏ "cụm danh từ"

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.

Most Americans eat three meals (10) ______ the day: breakfast, lunch, and dinner. Breakfast begins between 7:00 and 8:00am, lunch between 11:00 am and noon, and dinner between 6:00 and 8:00 pm. On Sundays "brunch" is a (11) ______ of breakfast and lunch, typically beginning at 11:00 am. Students often enjoy a "study break" or evening snack around 10:00 or 11:00 pm. Breakfast and lunch tend to be light meals, with only one course.

Dinner is the main meal.

For breakfast Americans will eat cereal with milk which are often mixed (12) ______ in a bowl, a glass of orange juice, and toasted bread or muffin with jam, butter, or margarine. Another common breakfast meal is scrambled eggs or an omelet with potatoes and breakfast meat (bacon or sausage). People who are on a diet eat just a cup of yogurt.

Lunch and dinner are more (13) ______. When eating at a formal dinner, you may be overwhelmed by the number of utensils. How do you (14) ______ the difference between a salad fork, a butter fork, and a dessert fork? Most Americans do not know the answer. But knowing which fork or spoon to use first is simple: use the outermost utensils first and the utensils closest to the plate last.

Điền ô số 11

A. addition

B. connection

C. combination

D. attachment

a. Gọi 3 số tự nhiên liên tiếp là a; a+1; a+2. ta có:

a+a+1+a+2=a+a+a+1+2=3a+3=3(a+1) chia hết cho 3

=> tổng 3 số tự nhiên liên tiếp là 1 số chia hết cho 3.

b. gọi 4 stn liên tiếp là a; a+1; a+2; a+3. ta có:

a+a+1+a+2+a+3=a+a+a+a+1+2+3=4a+6 có 4a chia hết cho 4 nhưng 6 ko chia hết cho 4

=> tổng 4 stn liên tiếp là 1 số ko chia hết cho 4.