A、easier
B、more difficult
C、important
D、interested
A、easier
B、more difficult
C、important
D、interested
A、increased efficiency than both natural and chemical methods
B、increased efficiency than both natural and chemical methods
C、ligating the DNA into the cells' genome via an electric shock
D、decreased efficiency than both natural and chemical methods
Imagine that you want to focus on a sound which your students are having difficulty with. Which of the following steps (A to H) are necessary and which are unnecessary? Why is (are) the abandanded step (steps) unnecessary? In what order would you teach and practise the sound? Why do you put the steps in the order? (1) List the steps that you think are unnecessary by writng down the capital letters of each step., e.g., A or AB ... (2) Explain why the abandanded step (steps) is (are) unnecessary. (2) Write the teaching order with numbers and letters, e.g., 1A, 2B, 3C ... (3) Explain why you put the steps in the order and the functions of each step. A. Get students to repeat the sound in chorus. B. Explain how to make the sound. C. Contrast it with other sounds. D. Write words on the blackboard. E. Get individual students to repeat the sound. F. Say the sound in a word. G. Say the sound alone. H. Say the sound in meaningful context.
A、disulfide bond
B、hydrophobic effect
C、peptide bond
D、hydrogen bond
A、wise
B、respectable
C、useless
D、weak
A、in the spring of 1974.
B、in the autumn of 1974.
C、in the winter of 1974.
D、in the summer of 1975.
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