调控蛋白的DNA结合区不包括（ ）。 A: Proline-rich区 B: Helix-turn- helix C: Zinc finger D: Leucine zipper

Rate the following cements in terms of compressive strength from highest to lowest A: A. zinc oxide-eugenol, zinc phosphate, resin B: B. zinc phosphate, resin, zinc oxide-eugenol C: C. resin, zinc phosphate, zinc oxide-eugenol

下列蛋白质结构域中，哪一个不能与DNA直接结合 A: 锌指结构(zinc finger) B: 亮氨酸拉链(leucine zipper) C: 同源结构域（homeodomain） D: 螺旋-转角-螺旋（helix-turn-helix）

It _______ in the tests for Sterility and Insulin in the supernatant under Isophane Insulin Suspension and for Zinc content and Zinc in the supernatant under Insulin Zinc Suspension.

Extended Insulin Zinc Suspension is modified by the addition of a suitable zinc salt _______ such that the solid phase of the suspension is predominantly crystalline.

On which finger the engagement ring will be put on A: The third finger of the left hand. B: The fourth finger of the left hand. C: The third finger of the right hand. D: The fourth finger of the right hand.

zinc can boost the immume system in the body

Which are the weak out of our five fingers? A: 1st finger B: 2nd finger C: 3rd finger D: 4th, 5th finger

When making a loose fist, Laogong(PC 8) is just under the tip of the ( ) A: index finger B: middle finger C: ring finger D: little finger

Don’t point your （ ） to someone since it’s considered rude to local people. A: index finger B: little finger C: middle finger D: ring finger