1. There is a park near our school.(改为一般疑问句)a park nearschool?2. Is there a photo on the wall?(作出否定回答)3.a,there,in,river,is,forest,the(?)(连词成句)4. There is a boat on the lake.(对画线部分提问)on the lake? 答案 四、1. Is there;your 2. No, there isn't...
Atmospheric deposition is the main input of HgT to the lake, but MeHg is supplied by a combination of atmospheric, near-shore wetland, sediment porewater, and biotic sources (methylation). Bog and upland runoff were minor components to the total inputs for both HgT and MeHg. For MeHg, wet...
When I got to Xishuangbanna with my friends last year, we went to visit the primeval (原始的)forest. There were tall trees, colorful leaves, wild animals and clean rivers. They were all magic to us. We even camped near a river there. What an exciting experience! -Linda Have you seen ...
Near Phnom Penh a junction occurs between the Mekong and the Sab River, which connects it to the Tonle Sap, sometimes called the Great Lake. The direction of flow of the Sab River varies according to the season. During the peak flood season, when the level of the Mekong is high, waters...