1 . c 2。 D 3.C. 4。 3. Less than -2. Greater than or equal to-1.5.30.1.21y less than one ninth 6.x less than 1 x greater than, etc. At 17/4, 7.x is less than18/19,8. X= 1 or 2, so the two-digit number is 16 or 27 9.k, which is more than half, and 10. 1mis is less than 22xis, which is more than four-thirds. Therefore, k = 17 1 1. A+B = 20 12 ① deserve at least 94 points ② can reach 94 points at the highest.