单选题 Edward has a collection of 13 tokens which are one of three colours: red, green and yellow. On each token is a number from 1 to 9 inscribed. No two tokens are identical. No number appears on both a red and green token. Which one of the following statements must be true?

单选题 Students at Jennifer’s school were asked to complete a survey about their exercise tendencies in order to discover the general activeness of the students. The survey found that people who get higher grades have lower hours of exercise (on average) per week than people who had Lower grades. Jocelyn: “This shows that people cannot be good at both academics and sport.” Which one of the following sentences shows the mistake that Jocelyn has made?

单选题 3D shape is shown below: Which one of the following options shows a view of the shape from above?

A、

B、

C、

D、

单选题 The leader of a study group says: “Any snacks that students bring to study sessions should be low in sugars and have high nutritional value.” Which one of these statements, if true, most strengthens the leader’s argument?

单选题 The 290 bus route from Pinkerton station to Westmoreland station only stops at major bus stations. Tiana boarded the bus at Pinkerton and got off at the second-last stop. Kenmore station is between Tenet station and Maven station. The bus stops at Leonard station right before Maven station. Kenmore station is two stops before Westmoreland station. Gladestown station is two stops after Norville station. What station did Tiana get offat?

单选题 A spy agency has a secret communication system which uses the following excerpt from a book: “Once, there were two brothers born nine months apart in the same room of the same hospital in the same manner—the protracted period of ill-timed contractions, the doctor in blue scrubs and white mask, the late-night crowning, the father’s kiss, the death of the mother.” A coded message is formed by giving a sequence of numbers. Each number represents the letter in each position of that number in the excerpt. For example, 2 would represent n and 6 would represent h； Sammy wants to code a message saying “consort”. Which of the following codes could represent this message?

单选题 A turtle petting zoo has four turtles: Leonardo, Raphael, Michelangelo and Donatello. The zoo keepers must keep a close eye on what the turtles enjoy eating. The keepers found that if a turtle will eat crickets, it will not eat lettuce. They also found that all turtles that eat crickets will eat chicken. Based on the information above, which one of the following statements must be true?

单选题 The male height average is higher than the female height average globally. Nancy: “My older sister is 1.65m tall, therefore, my little brother will be at least 1.65m after his growth spurt.” Matthew: “No, that’s not right. Your little brother should be at least 1.7m after his growth spurt.” If the underlined statement is true, whose reasoning is correct?