4. In some places, you have to learn to ______ if you want to buy something at a reasonable price.
(A) bargain
(B) contract
(C) sell
(D) transfer

複選題16. (5%) Which of the following statements are correct? (A) If λ is an eigenvalue of an n x n matrix A, then for any (B) If there exists some such that Av =λv, then λ is an eigenvalue of A. (C) If two matrices have the same characteristic polynomials, then they have the same eigen- values. (D) A diagonal matrix is always diagonalizable. (E) Let A and P be n X n matrices. If the columins of P form a set of n linearly independent eigenvectors of A, then AP is a diagonal matrix. 

1. Dr. Sun was one of the ______ physicians s in his generation. (A) forbearing (B) foremost (C) forerunner (D) foreseen

2. Her husband was always tired after doing such an ______ task. (A) intriguing (B) obvious (C) envious (D) arduous

3. Some people think that video games have a(n) ______ influence on children. (A) inhibiting (B) boring (C) educated (D) pernicious

5. The long dark days and lack of a job made John feel (A) alarmed (B) excited (C) depressed (D) satisfied

6. The relentless e omic downturn has made the already-stagnant investment market more _______. (A) opaque (B) transparent (C) favorable (D) astute

7. Estimates of the total consumer product sales vary from one region to another, but ______ regional sales, a stately upturn trend has bee n highly expected. (A) disregard (B) regarding (C) irrespective (D) respectively

8. Apples contain a powerful anti-oxidant t that can help ______ several types of diseases. (A) brush up (B) accelerate (C) stampede (D) stave off

9. The ______ rate toward the government's health care reforms intensified with more doubts raised and disputes debated. (A) disadvantage (B) disclaimer (C) discretion (D) disapproval

10. Perhaps the most ______ news to the government and businesses is that we finally see the employment rate gradually climbing up. (A) horrifying (B) gratifying (C) appalling (D) excruciating