[1] 单选题目(英文)

单选题（共8题，每题2分）
1. What hormone is primarily responsible for the maintenance of a normal plasma calcium level in mammals? （）
   A. Glucagon    B. Thyroxine    C. Calcitonin    D. Parathyroid hormone
2. Lidocaine has a longer duration of action than procainamide because it: （）
   A. lacks a nucleophilic aniline.             B. contains a non-hydrolyzable amide.
    C. has more hydrophobic character.   D. is protected from hydrolysis by ortho methyl groups.
3. An antibiotic's volume of distribution is 12 L, and its elimination rate constant is 0.25/h. To maintain a steady state plasma concentration of 10 mcg/mL, what should the infusion rate be? （）
   A. 20 mcg/h   B. 40 mcg/h    C. 10 mg/h    D. 30 mg/h
4. The primary advantage of using insulin lispro over other biotech-produced insulins is: （）
   A. a more rapid onset.   B. fewer immune reactions.  C. a lack of pyrogens.  D. a more prolonged action.
5. Persons who are becoming socialized into a profession are most likely to change their: （）
   A. personality traits.   B. attitudes.  C. religious values. D. parental relationships.
6. The age group that has the highest documented incidence of improper use of medication is composed of individuals: （）
   A. 65 years of age and older.   B. between 30 and 50 years old. C. between 12 and 21 years old. D. under 12 years old.
7. Recent international guidelines recommend that mild, episodic asthma be treated initially with: （）
   A. inhaled corticosteroids.  B. inhaled β2-agonists.  C. oral theophylline.       D. oral corticosteroids.
8. In a patient receiving enteral nutrition via nasogastric tube, which of the following is most helpful in preventing aspiration pneumonia? （）
  A. Elevating the head of the bed during feeding      B. Adding methylene blue to the enteral formula
  C. Feeding as bolus rather than as continuous infusions  D. Administering prophylactic antibiotics

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