pp grammer

amandalei

1．Light (from the) sun can penetrate (only) a few hundred meters (below surface) of the (ocean).

答案是C，请问如何改？
2．Oak trees furnish more (timber annually) in the United State than (any of) other broad-leaved tree and are (second only) to conifers (in total) lumber production.
答案是B，请问如何改？A中 TIMBER不应该用复数吗？

困难是弹簧

真抱歉，现在才回你的帖

2．Oak trees furnish more (timber annually) in the United State than (any of) other broad-leaved tree and are (second only) to conifers (in total) lumber production.
答案是B，请问如何改？A中 TIMBER不应该用复数吗？
***********
any of------->any

timber做木材讲是不可数，也可从lumber推出其不可数


2．Light (from the) sun can penetrate (only) a few hundred meters (below surface) of the (ocean).

penetrate ....into/through