What is crucial in the development of ‘babies’ brains?
A、Babies’ ability to focus.
B、Babies’ mastery of skills.
C、Babies’ muscle strength
D、Babies’ near-constant movement.
Which of the following statements is true?
A、The Amazon basin is the largest in the worl
B、The Amazon River causes huge rains every summer.
C、The Amazon rainforest supports about 20% of the world's plants.
D、The Amazon River carries 75% of the world’s water to the oceans.
3.In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.