Đề thi Olympic Tiếng Anh lớp 9 vòng 5 năm 2013 - 2014

Câu 1:

A diagram is shown. Which angle must be congruent to ∠AGB?

Câu 2:

The cost of renting a boat is $20 plus $2.50 per hour, where x is the number of hours of boat rental. Millie wants to spend less than $50 on the boat rental. Which inequality models this situation?

Câu 3:

Iodine 131 is a radioactive substance with a half-life of 8 days. With an initial quantity of 2,400 grams, the chart above shows its decay over a period of days. By extending the sequence, what is the total amount left after 56 days?

Câu 4:

What is the distance between -4 and 7 on a number line?

Câu 5:

A 6-foot man standing next to a flagpole casts an 8-foot shadow. At the same time, the flagpole casts a shadow of 40 feet. What is the height of the flagpole? (Round to the nearest whole number.)

Câu 6:

Diagonal Lane crosses Maple Court and Oak Street, which are parallel as shown in the figure above. Which intersection angles must be congruent to ∠A?

Câu 7:

Paco's baseball team traveled from Anchorage, Alaska, to Denver, Colorado, to play in a tournament. When it is 10:00 AM in Anchorage, it is 12:00 noon in Denver. Paco's baseball game started at 1:00 PM, Denver time, and lasted 3 hours. What time was it in Anchorage when Paco's baseball game ended?

Câu 8:

Which 3-dimensional shape can be formed from the net above?

Câu 9:

Two trapezoid-shaped tabletops are congruent to each other. trapezoid FGHI ≌ trapezoid WXYZ. Which side of trapezoid WXYZ must be congruent to GH?

Câu 10:

A model of a building is in the shape of a cube with a square pyramid on top. Each edge of the cube is 3 inches, and the square pyramid is 2 inches high with a 3-inch-by-3-inch base. What is the volume of the model in cubic inches?