阅读短文，完成下列任务。
Animals: Nature’s Weather Reporters
People have watched animals for centuries(世纪) to predict(预测) weather changes. When ants march in a long line to higher ground, it means rain is coming—they want to keep their homes dry. Birds fly lower than usual before a storm, because the moist(潮湿的) air makes them harder to fly high. Even cows can give clues(线索): they lie down in the field when rain is near, to keep their bodies warm and dry.
These animal behaviours(行为) are not just old stories—scientists have found that some animals can sense changes in air pressure(气压) or humidity. For example, frogs croak more loudly before rain, as the moist air helps their calls travel farther. Learning these signs can help us be ready for unexpected(意想不到的) weather, and it’s a fun way to know nature better.
任务一:阅读短文,猜猜词意。
()1. march
A. to walk together in a line
B. to move slowly
C. to run fast
()2. moist
A. a little wet
B. very dry
C. very hot

1. A 2. A

1. 根据后文"in a long line"（排着长队）的语境提示，可知这里描述蚂蚁排成一列向高处行进的状态，和选项A“排成一队一起走”的含义匹配，B选项“缓慢移动”、C选项“快跑”都不符合对应语境。
2. 短文已经给出moist的中文注释为“潮湿的”，选项A“有点湿”和词义吻合，B选项“非常干燥”、C选项“非常热”都不符合该词的含义。

任务二:整理文中提到的动物、行为和对应的天气信号,完成表格。

1. fly low close to the ground
2. rain is coming
3. lie down on the grass to keep cool
4. heavy rain is coming
5. rain is coming

本题考查动物行为预示天气的相关科普常识，结合六年级所学的对应英语表达，填写符合逻辑和所学内容的答案即可，匹配不同动物预报天气的典型行为和对应的天气信号。